Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea6de28358a3c56…

MALICIOUS

PDF

46.1 KB Created: 2021-04-08 20:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd7e6108a655c4955628178f44406bea SHA-1: ada876dd0d777476b7110411c67be99ca7030401 SHA-256: eea6de28358a3c566956f1b9f33456f378db6ed193d48e5be23c7f201a1baa0a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF is identified as a phishing lure due to its small size, image-only content, and embedded clickable actions. The heuristic 'PDF_IMAGE_LURE' indicates a typical phishing shape where a screenshot hides a button to launch an attacker URL. ClamAV also detected this as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6591

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 46 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://ambrose.edu/sites/default/files/webform/seliruni.pdf
    • https://aboss.by/sites/default/files/webform/pibodanagulevegomenet.pdf
    • https://www.uts.cw/sites/default/files/webform/vogoledifekotukedadawen.pdf
    • https://www.jts.org.jo/sites/default/files/webform/wijuwimitixatedus.pdf
    • http://www.friendlycc.com/sites/default/files/webform/74296331991.pdf
    • https://www.jwico.com/sites/default/files/webform/kupoxogij.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/30232074114.pdf
    • http://russian-ice-spb.ru/sites/default/files/webform/files/32020734574.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=libro+de+ceromancia+pdf
    • https://community.princeton.edu/system/files/webform/xakefabobadu.pdf
    • https://thesanfordschool.asu.edu/sites/default/files/webform/31460711967.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/44438097533.pdf
    • https://umatter.princeton.edu/system/files/webform/requests/72435273025.pdf

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