Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9da0bde362acc8…

MALICIOUS

PDF

38.7 KB Created: 2021-08-17 18:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 832eccba2d5d3ee004ffe4e147d8e89e SHA-1: 56407719a364c4f65b8954379598db9fd5563499 SHA-256: 6d9da0bde362acc8f458ac080bb13274bb64753f0a5232afbef0581bcbcb19bb
174 Risk Score

Malware Insights

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

This PDF is identified as malicious by multiple heuristics and a machine learning classifier, and is detected by ClamAV as a phishing trojan. The document appears to be an image-based lure, typical of phishing campaigns, directing users to external URLs hosted on compromised websites. These links likely lead to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8588

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 38 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://irlanc.ru/uplcv?utm_term=adding+and+subtracting+decimals+worksheets+pdf+4th+grade PDF link annotation
    • https://queensflower.nl/clientfiles/timetivifuzezov.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4020e4320---veviborezurorexiluwapavok.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dba80cb26e---73277288248.pdfIn PDF document text
    • http://predit.ru/admin/ckfinder/userfiles/files/22716178643.pdfIn PDF document text
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/89365997954.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/malopukofemifezedoxupik.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd014b17e9f---mutanik.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/nofiwisadu.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1faf5867d0---82045198276.pdfIn PDF document text
    • http://language-coach.pl/uploads/files/92590568209.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607972d946cee---jupowux.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/1193817127.pdfIn PDF document text
    • https://agmatbaa.com/upload/files/bodedivewepodato.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/75705773283.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/sIn PDF document text

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