Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75bc0dfec3a26fc…

MALICIOUS

PDF

54.7 KB Created: 2021-10-14 00:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 360a5845b23b7bc00d0fc5bd3fb2a4b1 SHA-1: 58865fe0aaaf6d4f077e5ffecd7540581899b808 SHA-256: f75bc0dfec3a26fc4a2fd44cbb51be62c4dd0f33d2c7de0261800539cff69aff
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links. ClamAV detection and ML classification confirm the malicious nature of the file, suggesting it's used for phishing or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8415

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://bacvietexpress.com/upload/userfiles/files/55730078095.pdf In PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161613459cb26d---mulekuguku.pdfIn PDF document text
    • http://hkacca.com/userfiles/sekopefabodevegota.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/sagon.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/28210629839.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/5977897709.pdfIn PDF document text
    • http://mashtalkandil.com/userfiles/file/56694720895.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/vozabamesurapav.pdfIn PDF document text
    • http://miyozenemeryville.com/uploads/files/10714183207.pdfIn PDF document text
    • https://viceda.com/userfiles/file/jujolowavibofu.pdfIn PDF document text
    • http://chhattisgarhsanskritboard.in/sharpinstitute/images/files/tixemazopaxigamagomus.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/wirekidinumoran.pdfIn PDF document text
    • http://vagtteam.com/userfiles/Files/94113395969.pdfIn PDF document text
    • http://dobrejaja.com/Upload/file/76776490530.pdfIn PDF document text
    • http://ineke-ott.nl/keramiek-beelden-imagesfile/wiwodu.pdfIn PDF document text
    • http://idrogastermoclima.it/Utentifile/FCKPage/file/38734302794.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167033d9d162---kerewuvemesi.pdfIn PDF document text
    • http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/vuvowexa.pdfIn PDF document text
    • https://ruh-center.ru/userfiles/file/36447655367.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/fuzixukoxulasix.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/godaliwuxuvexovikapafinig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BcFPVxLj4jw/uplcv?utm_term=element+crossword+puzzle+answersPDF link annotation