Malicious PDF — malware analysis report

Static analysis result for SHA-256 191db43396bf9a51…

MALICIOUS

PDF

41.4 KB Created: 2021-09-19 09:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f9a9b209878d133a84499e668f4e24e0 SHA-1: 941d475bd3f5046df3835501fadba52606c88453 SHA-256: 191db43396bf9a5169cb52222bc062cee353cb20097b31db7da7f913cda00ff1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a phishing lure. It contains embedded JavaScript and is designed as an image-only document with a clickable action, a common technique to redirect users to malicious sites. The document body is heavily obfuscated, but the heuristics indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7543

Heuristics 6

  • 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 41 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://renewone.de/files/78524640717.pdf
    • http://quiltingacademy.net/fckeditor/userfiles/file/kepalad.pdf
    • http://mmbc.cz/_data/user_files/file/soxexamekotabedi.pdf
    • http://xaydunganphubacninh.com/webroot/img/files/jiranomewawogawa.pdf
    • http://dynamic1984.com/user_file/file/36420431193.pdf
    • http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/79617743294.pdf
    • https://emenu.hu/editor_up/10900652622.pdf
    • http://bdpq.hungminhits.com/files/uploaded/files/riwozefaxufuvibu.pdf
    • https://stw-nowogard.pl/download/file/5564643996.pdf
    • http://ramenzoni.eu/userfiles/files/42066871971.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613adf3364c7a---60816197807.pdf
    • http://schokoladenfontaene.de/idata/6684828157.pdf
    • https://anthonygillant.com/userfiles/file/sipedaname.pdf
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/4120852327.pdf
    • http://www.dreamstoreonline.es/ckfinder/userfiles/files/5851012233.pdf
    • https://whiteplacard.com/UserFiles/file/93197248602.pdf
    • https://ienter.bg/files/fuvebaroxepi.pdf
    • http://finadev-groupe.com/userfiles/file/noforunetivovora.pdf
    • https://trexanh.net/upload/files/50181321474.pdf
    • https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/78771953222.pdf
    • http://xn----otbbfbbknchz.xn--p1ai/sadm_files/ralopomutiwa.pdf
    • https://nucamsa.es/userfiles/files/75549567201.pdf
    • https://coherence.cz/userfiles/file/ruzodujuvewabarujenaxa.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=amazon+prime+video+mod+apk+latest+version+download+2021