Malicious PDF — malware analysis report

Static analysis result for SHA-256 216d7317c251abb3…

MALICIOUS

PDF

44.1 KB Created: 2021-05-28 15:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6e5c41e5e2928d6c6788052c5597461c SHA-1: 8088420dd1612bdb71bdee0a7cddf8595c3629a7 SHA-256: 216d7317c251abb3190ea627276ba6a43da913cc283fd7f39c2520be3a184a6a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites, suggesting an attempt to lead victims to malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8148

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://queure.ru/uplcv?utm_term=tablas+de+durnin+y+womersley+pdf PDF link annotation
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/gjron2g80mj7k3pr0l3iscm9l4/satomikufa.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfca0e30fc---kezud.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16077d59f1e2b0---46315264466.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/59440116420.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724a0b6609a---41429776427.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/p7ukvqf74p85mlv1h3qh3k989a/68339266483.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c238c2ce5---waviginurujema.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be62977ee2---34252321484.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/6c7d6a7cf9d44751e28118c597e7b529/78020863717.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0853f341a---nemarulatesuxemotiwax.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/b75639adfd981a3d713e808c7b1bfdd6/pawufajivu.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/rl3o1e4b3rholdn6em995satt4/30153893687.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/64611111805.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609607aa945b8---50471807350.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9b6e1dbf0---108994630.pdfIn PDF document text
    • https://chaplains-camps.org/upload_picture/file/xonina.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd40a91cc3---86852156704.pdfIn PDF document text

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