Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c25ab82ab09c9c…

MALICIOUS

PDF

41.0 KB Created: 2021-06-23 05:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c8490b0ca176a7191ef648c807cef30e SHA-1: 0a01a547edbb1a643f05e25d3bca4a690b459f9b SHA-256: b7c25ab82ab09c9cdf37791cc3c9d2da7e424ce0ffca7d42f8fa425debd88345
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9062

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 40 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 https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/88095f25475c497f82eaad5d842f8cf3/bubutazakerojokomasa.pdf In PDF document text
    • http://phrabat.net/UserFiles/File/zemirivomokutitilamamer.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c17f95a6a---wanok.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/8552931519.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081af6a04681---gaxituvesoditabafub.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/084e8f1dec8420c9acdd0a611ac9f93c/87750982126.pdfIn PDF document text
    • https://85097781.com/upload/files/36341605391.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/12756905505.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/de5d314351e8d3443c04a8432a0437ca/lowisoleponi.pdfIn PDF document text
    • http://cesurmakina.com/userfiles/file/salononuxu.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/97047883374.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bec83666792---refovizuvimatipo.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160864b8220746---19605495471.pdfIn PDF document text
    • http://darec.sk/files/files/rukif.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4unn5oigf552vl1vm7fi3rar3r/garijojokam.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a19b5ab52e4---wugiwelavatunati.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/73111306208.pdfIn PDF document text
    • https://beatmuellerfoto.ch/userfiles/files/76699164661.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=compendium+of+therapeutic+choices+7th+edition+pdf+free+downloadPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.