Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2f38c46f7d9636…

MALICIOUS

PDF

37.3 KB Created: 2021-09-01 02:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: acba92944529af268afc8472a5277ed3 SHA-1: e0c1cdc33187575c9047e359456df0ece3a07578 SHA-256: 3e2f38c46f7d96362aef8627a6149a850a4060563ad42d2fd9bb2e16aca4cc2f
144 Risk Score

Malware Insights

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

The PDF is identified as an image-based lure, typical of phishing campaigns. It contains multiple embedded URLs, with one pointing to 'http://uleshuzatshop.hu/files/file/zakitene.pdf', suggesting it's designed to redirect users to malicious content. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7998

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 37 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 http://uleshuzatshop.hu/files/file/zakitene.pdf In PDF document text
    • http://klm-co.ru/foto/ck/files/56366629321.pdfIn PDF document text
    • https://machnhaduong.com/images/uploads/files/zekolobowowusokupanixaxo.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/miviwunuvifonozotigosud.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160d4129c89e38---34021975537.pdfIn PDF document text
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/61354464137.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/koxal.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/b8033acba68d142c2644f24462b15c0c/89179190799.pdfIn PDF document text
    • http://clubselectionvoyages.cIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=overweight+while+pregnantPDF link annotation

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