Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cb721d5fbe815c…

MALICIOUS

PDF

235.5 KB Created: 2022-03-03 08:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: c5ce124949d4cc62fe7f580fab764386 SHA-1: 1abf5d7ccabad4b218a02ae60591115219f0596a SHA-256: 25cb721d5fbe815c92f6d0d816295596b048a9828675cab643b499a163da758a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7365

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://lazav.co.za/XSRYdR1H?utm_term=megas+xlr+episode+guide PDF link annotation
    • http://idevoz.rs/files/musosekedivuvana.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/kibenegupevodosared.pdfIn PDF document text
    • http://manavpublicschool.org/manav/userfiles/file/3223451475.pdfIn PDF document text
    • http://linkipt.com/_UploadEditor/files/xumovixufusokuberuzabesa.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/43647717741.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161fccc649f7c8---noloxinowefubuzukamimudej.pdfIn PDF document text
    • https://bigsao.com/kcfinder/upload/files/nadizigin.pdfIn PDF document text
    • http://puisan.ru/uploads/file/sakutubupi.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/lagimugesajosatoxepofapa.pdfIn PDF document text
    • http://varnamonarradio.se/admin/kcfinder/upload/files/86968068144.pdfIn PDF document text
    • http://prepearl.com/uploadsfile/5750240239.pdfIn PDF document text
    • https://brune-schmuckwerk.de/ckfinder/userfiles/files/kipuwiwufedet.pdfIn PDF document text
    • https://kiptep.ru/file/46289345885.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/lusunogiregitezufomawa.pdfIn PDF document text
    • https://obo.olsztynek.pl/assets/includes/kcfinder/upload/files/6919794099.pdfIn PDF document text
    • https://prizmaemys.com/img/files/woniw.pdfIn PDF document text
    • https://ntct-dz.com/ckfinder/userfiles/files/17165545352.pdfIn PDF document text
    • https://medpressa.ru/files/file/40018044681.pdfIn PDF document text
    • http://bluestandard.pl/ckfinder/userfiles/files/liwerogalufe.pdfIn PDF document text
    • https://t-groupvnxkld.com/uploads/news_file/36864681649.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/89906969780.pdfIn PDF document text
    • http://xaydunghoangthanh.com/img_duhoc/files/mefisoruvumaxubewaf.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/9e6485846487f84e8e4874e573e7a0d8/bevonabixularuwugisuva.pdfIn PDF document text
    • https://powiedzdoktorze.pl/file/files/surigodojuvakuralazav.pdfIn PDF document text
    • http://blueyee.com/upload/file/08125400854.pdfIn PDF document text
    • https://travelbook.kz/kcfinder/upload/files/62815911599.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe7d2c6f674---61720289819.pdfIn PDF document text
    • https://nordiskvillaventilation.dk/userfiles/file/pexusabineguf.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20220225122517_1803545902.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/25350541592.pdfIn PDF document text
    • http://www.negyen.com/admin/ckeditor/kcfinder/upload/files/27703053541.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/41399436159.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/6423067bc059b2a9747bff01626e5e5b/bitugikatolofo.pdfIn PDF document text
    • http://exim5.hu/_user/file/zobumesuvip.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_off00033a98.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00033a98.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A98 19440 bytes
SHA-256: 3a6458b1d40b2f86a9b54aaf367cbe68691a1310879f422538e5610a75b0f2ec
font_01_sfnt_off00036df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36DF5 10560 bytes
SHA-256: fb3fa0f2ef7865270f28a1b9de008e7e04fd66fb7d50d57cb202ce26dff12bb5
font_02_sfnt_off000385f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x385F2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9