Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ff89e542426a67…

MALICIOUS

PDF

64.0 KB Created: 2021-09-01 22:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 815f1527dd4be84b7fd9af2f7876f2e8 SHA-1: f13a1c062ac845c85a35581c43e7e5998a83a5e3 SHA-256: e1ff89e542426a671ba2e3bedd4d53354253e27c52921f2df99a67f4a5f45b46
124 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous external PDF links, many of which are hosted on suspicious domains. This pattern suggests an attempt to lure users into downloading further malicious content or phishing for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7015

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dienlanhhonganh.com/images/pic/file/60046091011.pdf In PDF document text
    • http://cutyoursupport.com/userfiles/file/mujaravexeronapidejenavo.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/48072979253.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffb159530e---pawebudupugilode.pdfIn PDF document text
    • http://soul-program.com/clients/e/e8/e84723a0d254fbc5507aaa4bd1967541/File/96383440602.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/8402364846.pdfIn PDF document text
    • http://viral-list-machine.com/ckfinder/userfiles/publics/files/1921598756.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b3bd1925690---5241273658.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/54073805007.pdfIn PDF document text
    • https://rumahbaruku.com/contents//files/80624465235.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=cesium+bromide+cation+and+anionPDF link annotation

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