Malicious PDF — malware analysis report

Static analysis result for SHA-256 2581a6ed04f35b8c…

MALICIOUS

PDF

314.9 KB Created: 2022-02-27 07:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 3f0ce02a372c22b34394997e566ab9a9 SHA-1: d0fbfebd42e5a2022fb0cb9239237a5a73a77309 SHA-256: 2581a6ed04f35b8cb7996c7ea63bb9ec738bad7bd6146670c3cb226870e82279
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8931

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://cafij.co.za/XSRYdR1H?utm_term=chemdraw+ultra+12.+0+free PDF link annotation
    • https://motoralbini.it/files/file/87823777570.pdfIn PDF document text
    • http://grjzsgc.com/luodan/images/userfiles/file/jitakasulutawunodelugije.pdfIn PDF document text
    • http://carszana.com/image/upload/File/56475828397.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161fe6af4b00f4---zoluregepukirafemiwobi.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/1409943bf8ef8e58db855364d0f89d5a/fuwoj.pdfIn PDF document text
    • https://eric-parnes.com/ckfinder/userfiles/files/ranojoroderanofov.pdfIn PDF document text
    • http://anninhsieuthi.online/upload/files/zefubaz.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/80780590827.pdfIn PDF document text
    • https://immobiliareincentro.it/allegati/file/54634006939.pdfIn PDF document text
    • https://invest.pl/userfiles/file/ganoz.pdfIn PDF document text
    • http://beverleyannes.net/home/beverley/public_html/ckfinder/userfiles/files/jakisugesolemebumojaxej.pdfIn PDF document text
    • http://akafgdsgreawy.pretty-match.com/upload/files/sirajilijebevakiberop.pdfIn PDF document text
    • http://hbaoge.com/upload/files/fapob.pdfIn PDF document text
    • https://pmo.jot-solutions.com/files/mukalimuwubonegiw.pdfIn PDF document text
    • https://crmtristan.talenzsoftware.fr/upload/files/wumofovuvit.pdfIn PDF document text
    • https://fobh.net/userfiles/files/74611332952.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/verawomuruso.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619b71aa0fd98---38741589418.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_off00047d66.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00047d66.bin)

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D66 18068 bytes
SHA-256: b381e13d56f78efffe2820f3314f14a753a8f70ec8d90820163248299b40a7a2
font_01_sfnt_off0004acef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACEF 10712 bytes
SHA-256: 399feb0e8acadcff7121c5572fcd594bc1f951801ccd7d5d9d454d8ddf86db1c
font_02_sfnt_off0004c5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5C7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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