Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb7946e58230ea5…

MALICIOUS

PDF

38.7 KB Created: 2021-09-27 08:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 314478dc2310d946acdef3fadd1d28f2 SHA-1: 79107e58438449acb62d868e47066d86570fe481 SHA-256: abb7946e58230ea5b593b26e2b9ae7151aeb7b6ff8e99d2f5b95f9908c1e4827
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The document is image-heavy with a clickable action, typical for directing users to external sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interaction, likely leading to a phishing page or a download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8504

Heuristics 5

  • 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 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://firsatoyun.com/calisma2/files/uploads/5299957781.pdf In PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16140f4240a329---95469383438.pdfIn PDF document text
    • https://hanurichurch.org/ckfinder/userfiles/files/46083784629.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/49780310541.pdfIn PDF document text
    • http://carszana.com/image/upload/File/37351104268.pdfIn PDF document text
    • http://dd-eng.com/files/files/42468135848.pdfIn PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/kupumobelebugedilum.pdfIn PDF document text
    • http://coimbrasoftware.hu/images/uploads/files/62624655769.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/ff0330a3e613a14eebab02e6972fb1b3/pewuwematolulanatalivoki.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/27497590801.pdfIn PDF document text
    • http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/13412294586.pdfIn PDF document text
    • http://2b3la571ga-70p.com/contents/files/40807785671.pdfIn PDF document text
    • https://weekendtripskolkata.com/userfiles/file/mometasamil.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/84972093499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=pokemon+black+2+rom+euPDF link annotation

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