Malicious PDF — malware analysis report

Static analysis result for SHA-256 472fb646fe6c5cc7…

MALICIOUS

PDF

50.5 KB Created: 2021-09-24 05:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 268ac48c9b8e58579de6c334ef215d3b SHA-1: 06f3ef313ad600165f9c2dd87f0dfaace08a1fe1 SHA-256: 472fb646fe6c5cc7abd372f9e5f535fb10d154f7f9a416d914d5155c63a3b0a5
124 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/22225267020.pdf In PDF document text
    • http://dmhu.eu/uploads/uplib/file/roxewuzenamemupubiwu.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021092408382291.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/cf5f11dde2d341d1b6884850b444132e/tofokifozemume.pdfIn PDF document text
    • http://khamtribacninh.com/images/files/60942673601.pdfIn PDF document text
    • http://hykylalumni.org/userfiles/57590451320.pdfIn PDF document text
    • http://seghers.kr/data/editor/file/1900738003613483e5716b5.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/wolemoge.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/45337642833.pdfIn PDF document text
    • https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/73559321762.pdfIn PDF document text
    • http://ediliziaunoaventi.com/userfiles/files/64965951299.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/welewifawakaton.pdfIn PDF document text
    • http://rjt1.org/upload/files/30181443974.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/42799460517.pdfIn PDF document text
    • http://imprezka.2kc.pl/Upload/file/futebitopalapupamesupener.pdfIn PDF document text
    • http://krukaiart.com/userfiles/files/xisosavodorivev.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613941fbf2fa8---kutapamemavusifajowijare.pdfIn PDF document text
    • http://greenflameenergy.com/userfiles/file/dukotelomibiti.pdfIn PDF document text
    • https://truckforceone.com/upload/editor/file/51318515025.pdfIn PDF document text
    • http://yongchengtech.com/uploads/files/202109130903261419.pdfIn PDF document text
    • http://ajeah-intl.org/fck_image/file/33654706768.pdfIn PDF document text
    • https://siangyun.com/upfiles/editor/files/fijamo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mod+apk+of+hill+climbingPDF link annotation

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