Malicious PDF — malware analysis report

Static analysis result for SHA-256 25899c265f894486…

MALICIOUS

PDF

252.4 KB Created: 2022-03-20 00:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 48cb027cae5ecb29c2d0081eb601dc9d SHA-1: 2d2421684cc51f0d97cf6934987397384ef9081b SHA-256: 25899c265f8944860c0e5ccd1a2e2bbea6040b4762a63137876148bab667792e
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6881

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yoyep.co.za/XSRYdR1H?utm_term=american+all+video+song PDF link annotation
    • http://krajinar.cz/soubory/files/7360387728.pdfIn PDF document text
    • http://mxagproducts.com/upload/browse/file/2434562769.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/1163b517e998fbe1e5785e3584e6b2c5/46619734674.pdfIn PDF document text
    • http://whuntex.ru/userfiles/file/kekexujigonitavup.pdfIn PDF document text
    • http://www.restaurantegrellada.com/adminc/kcfinder/upload/files/93660499307.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621db378aeb41---16075708109.pdfIn PDF document text
    • http://lucidareemantenerepavimentifaidate.it/userfiles/files/14912140305.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/b0359737f0a472196057d6e75bfdcf9a/98275334678.pdfIn PDF document text
    • http://divorceinhungary.hu/kcfinder/upload/files/guxixokefokavigifujuga.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/luxudovebikuboluwikewena.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/niwapawuvumiwixagarogef.pdfIn PDF document text
    • http://gardenofsound.com/userfiles/files/68622656776.pdfIn PDF document text
    • http://yjbiotech.cn/upload/files/pixamevo.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/fawulipasiwokika.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/f8be9e27463158f86688c57868caf3d3/pikekikibiza.pdfIn PDF document text
    • http://cesishotel.com/res/wysiwyg/file/38871854431.pdfIn PDF document text
    • http://www.propper-droppers.nl/files/file/kegamaxajomux.pdfIn PDF document text
    • http://tecksco.com/upload/files/76473908675.pdfIn PDF document text
    • https://stalbeckers.nl/userfiles/image/file/75452225411.pdfIn PDF document text
    • http://ingenierie-mont-blanc.fr/kcfinder/upload/files/busuwexudadefibewasafim.pdfIn PDF document text
    • http://alessandrobelleseveterinario.eu/userfiles/files/76059400994.pdfIn PDF document text
    • http://fpole.ru/sadm_files/82965473063.pdfIn PDF document text
    • http://rc-modeller.se/images/file///58880289578.pdfIn PDF document text
    • https://cakkue.com/contents/files/tovawixapujiz.pdfIn PDF document text
    • http://icloudcleaners.com/uploads/account/autoresponderfiles/43728816163.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c5b4a5f868---68982848544.pdfIn PDF document text
    • http://salda.se/saldus/kcfinder/upload/files/78289503106.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/88454943382.pdfIn PDF document text
    • http://jwpowerwashing.com/userfiles/file/bomesakepapuzavawuloruz.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/161f8d6580b6fc---87978734853.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2022022317444773499.pdfIn PDF document text
    • https://www.piramideidiomas.com/ckfinder/userfiles/files/relifagukamowawitex.pdfIn PDF document text
    • http://dobrejaja.com/Upload/file/84695168979.pdfIn PDF document text
    • http://www.amanuttarakhand.org/ckfinder/userfiles/files/wewudigel.pdfIn PDF document text
    • https://anvatsaigon.suzukihungyen.net/data/dulieu/files/madikiloregurazapepip.pdfIn PDF document text
    • http://comac-international.cz/userfiles/file/jedekuwotafetika.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16219f45c11f13---gidunumidasaxeziliwuzo.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/defigosesodisolutoduvagej.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000381c7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000381c7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000381c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x381C7 10664 bytes
SHA-256: 4369634512d6732ebb71cab17c173b3665eab75703f8c98f032024bbf508a93c
font_01_sfnt_off000399f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x399F4 18968 bytes
SHA-256: faf7128cf13a61e5803536cc0a223d6e4e25ae1977d42e781f22211399d4c881
font_02_sfnt_off0003cb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB19 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9