Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a36e328e8aad0fb…

MALICIOUS

PDF

62.1 KB Created: 2021-09-18 14:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2ede2eb358f8572c5244803353711e32 SHA-1: 76132bf9caeeb715e6b930ceeaa2a48f3c5b6284 SHA-256: 2a36e328e8aad0fbaa7ff3d7fd9bc943b1151c5e9ae4c5b77ee9f26e4a3ce058
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, including one pointing to a raw IP address and others hosted on compromised CMS platforms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting PDF vulnerabilities or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7578

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://huntic.ru/uplcv?utm_term=android+pdf+scanner+app PDF link annotation
    • http://theleadershipworks.com/PO2/UPFILE/userfiles/files/50139215233.pdfIn PDF document text
    • https://kenadong.com/contents/files/wupofoz.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/pupalerusutekibupigil.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/zatopu.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16140f1ac5196b---51835396061.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/25313877914.pdfPDF link annotation
    • http://fsoa.cn/userfiles/file/lepilojebixa.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/57112234257.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/02d7404a25ddc70507aaca3f77c006fa/58409508694.pdfIn PDF document text
    • http://timocomputer.cz/files/file/39873534844.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/rofam.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/vajokoje.pdfIn PDF document text
    • http://constantcontinuity.com/membership/data/files/31479380593.pdfIn PDF document text
    • http://techcessgroups.com/userfiles/file/1668779016.pdfIn PDF document text
    • https://pointvirgule.ca/upload/editor/file/24060876471.pdfIn PDF document text
    • http://takramaipai.com/mypicture/file/634643201.pdfIn PDF document text
    • http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/sinewixalulus.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eef67bca85---pinokelam.pdfIn PDF document text
    • http://archi1919.com/smlclub-files/file/vilasojodenasekosokeje.pdfIn PDF document text

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