Malicious PDF — malware analysis report

Static analysis result for SHA-256 242d8be5bf5497d7…

MALICIOUS

PDF

38.7 KB Created: 2021-07-01 23:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 490eca048aacf4e80e537cc9ebe99e15 SHA-1: 8071eebbc25e32e31b182bc0b73767ccc7bd966d SHA-256: 242d8be5bf5497d776fec2f27933a7ffc0457df96f546a425c0c32aa002bcd9d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The PDF is structured as an image-only lure, typical for phishing campaigns, and contains numerous external links, many pointing to compromised CMS upload directories. The primary attack vector appears to be a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8501

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 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://catamma.ru/uplcv?utm_term=did+alan+turing+invent+the+first+computer PDF link annotation
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/3083212d1e5837c6364322aab3925587/kikarepupogekewomibe.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a1943af65---kitumu.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image//files/49706667916.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/22452621292.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/eb0fb44ec7cc9a5c89337aa14f49c0d4/67618267420.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1608018117028a---12336450993.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/638e4c40cc13a329aa6a3161bd39e08e/muromipopefesaxidujin.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/ee18d0b508d187a16225f94e7c92444b/tapovane.pdfIn PDF document text
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/9e1a481ae61e1098da547aa8009705ed/duluweku.pdfIn PDF document text
    • http://woori-tour.kr/FileData/ckfinder/files/20210623_7F98F44C49F768FE.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3713af9b9---37732177648.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c49ec2bf15f---57072463114.pdfIn PDF document text
    • http://benetalent.com/upload/files/niguzubejavavijufip.pdfIn PDF document text

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