Malicious PDF — malware analysis report

Static analysis result for SHA-256 925c3d5e3cd9c542…

MALICIOUS

PDF

39.6 KB Created: 2021-09-26 07:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 89dde38808781132185ebc4f296e56c1 SHA-1: dd0ffb7d93b1409490d15fa69a3c376852377672 SHA-256: 925c3d5e3cd9c542dece966b72ce6290b1c737858729eb32012afcea6155f2ac
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of a screenshot designed to conceal clickable links. The document hosts a link farm pointing to multiple disposable domains and compromised CMS upload directories, suggesting an attempt to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9758

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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://93564497.com/userfiles/polonojojesidabe.pdf In PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f99a9ae2a7---kagawadijubuwefof.pdfIn PDF document text
    • https://lrsdev.com/userfiles/file/luguwo.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/10084130462.pdfIn PDF document text
    • http://mayphatdienngocquang.com/media/ftp/file/mukomu.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/moganafo.pdfIn PDF document text
    • http://husplaza.hu/editor_up/nulizuvidowalowuri.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f9784d61b6---13638821867.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/2e103b8c305ebf3c283b6b4a8c9f55ce/zuxitosevunojob.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/2e5a9d0ea9ebc22ffa37601ee281279b/bukataforonekoxaw.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/50178983480.pdfIn PDF document text
    • https://macintosh-szerviz-javitas.nuttydog.hu/ckfinder/userfiles/files/ranoladonedodoremoj.pdfIn PDF document text
    • http://sinocelltech.com/filespath/files/20210911193448.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/5c6b9a2c08c7b1e949ffd0e460728557/13053551598.pdfIn PDF document text
    • http://csc021.com/userfiles/file/20210907170254_3wdj20.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/69062763959.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/847hgpmgn7mea8fhpvv730bp6u/silurojelemugisorin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=pokemon+black+ppssppPDF link annotation
    • https://tes-sys.com/uploads/ckfinder/files/20210923/16323558234959.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.