Malicious PDF — malware analysis report

Static analysis result for SHA-256 0916967abba5338a…

MALICIOUS

PDF

48.0 KB Created: 2021-07-04 11:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1dbf01bc606535e58487fc537cd36286 SHA-1: 29b817924ac43ae1d6e0006a7e333bca39169d42 SHA-256: 0916967abba5338ae2d193382c1e42bfd5a1f9981dfe280654aadd3cc75943da
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised CMS upload directories and disposable hosting, suggesting an attempt to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interaction via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

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 48 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://copy2d.com/ftp/image/file/wugamije.pdf
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a745bb47df3---57141512074.pdf
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/9df53356fe626b0cbbad48210fad55b3/17395534016.pdf
    • http://presssimayeshahr.ir/pic/file/xurax.pdf
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/1e87b85bf0d51fe47bfa6117292d3fad/rewubevaroxuzen.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a045f166e---bijopedetujizelopexiw.pdf
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16075b47bbb4a5---jodadatunupa.pdf
    • http://the-bom.kr/upfile/files/rimiguretixowitipezoguj.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d24703ea9---86727873455.pdf
    • http://cn-noah.com/uploadfile/file/buwofanobesenotogevi.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da5a3107388---waletalavuvux.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf8ace8f36---fagadis.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/45a2a0a4ea2d8fa1e2b65ccf3c05c794/bofidikafexadubagewexo.pdf
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c6a1da70d---goronajiji.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4937ef731---1322916930.pdf
    • http://www.findvoters.com/userfiles/file/zozuvekawa.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c34dc62feba---16185380877.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/6vs4df84t9i8c0katc8aipdds6/3029507826.pdf
    • http://fmi.lu/userfiles/files/pakabujisemenowede.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0ad4ea353---47825907596.pdf
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/6bcp4t7jh99nvrah1jb06cddrd/77864026757.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+remove+new+voicemail+notification

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