Malicious PDF — malware analysis report

Static analysis result for SHA-256 03becde978fb2270…

MALICIOUS

PDF

59.6 KB Created: 2021-09-20 11:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: da1e65e3560dd52a8553659de21891a9 SHA-1: 81782fd35161fa096b6ee363c782e5a14082eece SHA-256: 03becde978fb2270f52bc5f4e01e78b5a8fb8795049f8f823aab43ca442e8b9a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, while some are marked benign, are part of a larger pattern of directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6909

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sunil.kr/uploadfile/fckeditor/file/97979215848.pdf
    • https://bdprescription.com/ci/userfiles/files/nofana.pdf
    • http://musikpark-live.de/userfiles/file/20771804376.pdf
    • http://taispacedesign.com/upload/files/52139309108.pdf
    • https://watertorens.nl/userfiles/file/54475834244.pdf
    • https://indicaperu.com/userfiles/file/50414194733.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/8ti2l832ndufih799m8jbjnu05/warasufip.pdf
    • http://fasson.vip/images/editor/files/93757606309.pdf
    • http://scvumaichiramen.com/uploads/files/46699379803.pdf
    • http://uzmansporzeminkaplama.com/resimler/files/mexaxozegaripifuxapeb.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed5842cff3---paxegepa.pdf
    • http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/29413869877.pdf
    • http://bjxbw.cn/userfiles/file/34771085404.pdf
    • http://asustainable.com/global/file/dazij.pdf
    • http://planetamama.ru/files/file/xovoretivopanuvilog.pdf
    • http://tasteofruraleurope.eu/upload/File/jalusesolurodalusatovewa.pdf
    • http://crosswaysrecruitment.com/userfiles/file/lagutewoforejewobobini.pdf
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/2d9095a9e807d2065420023f3f0f1577/91340906640.pdf
    • http://seamacros.com/upload/file/39876646542.pdf
    • http://prplus4u.com/ckupload/files/zipibabezijufusewa.pdf
    • http://katour.ru/admin/ckfinder/userfiles/files/54522137087.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+increase+phone+memory

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