Malicious PDF — malware analysis report

Static analysis result for SHA-256 376479ec350566e7…

MALICIOUS

PDF

79.5 KB Created: 2021-09-08 23:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9a04a74ec96e3f1eeecc6a8e261b2a62 SHA-1: 0bd1cbb8636f719e7e1706e61dc88cfdf0c391df SHA-256: 376479ec350566e7ca323ab887e4ee3f4e120c33d0ebd27e3f604c9c692a4a03
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains numerous embedded URLs, many of which point to disposable hosting, indicating a link farm designed to redirect users. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM further supports this, noting a high number of distinct hosts and links. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4611

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 https://themalc.org/files/file/5713192169.pdf In PDF document text
    • http://www.og2c.com/images/file/zudewe.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/domimixibewivugad.pdfIn PDF document text
    • http://rebeccaosborne.com/uploads/87494568275.pdfIn PDF document text
    • http://slkuang.com/v15/Upload/file/20219273744375.pdfIn PDF document text
    • http://eg-connect.com/uploads/editorfiles/file///sasadale.pdfIn PDF document text
    • https://lazdynumokykla.lt/userfiles/file/29485039169.pdfIn PDF document text
    • http://iknow.pl/files/file/35967404517.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/wozizeminobomuwatopema.pdfIn PDF document text
    • http://dealershop.es/userfiles/file/takobudupate.pdfIn PDF document text
    • http://salonorganica.ru/upload/files/2370769595.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/lerijabaretigefodapezoz.pdfIn PDF document text
    • http://ppogrimall.com/upload/editor_image/file/zajobavatidule.pdfIn PDF document text
    • https://coebmsf.com/userfiles/file/82951000066.pdfIn PDF document text
    • http://archpiudue.com/userfiles/files/37210002255.pdfIn PDF document text
    • https://papiratisk.cz/soubory/12040848392.pdfIn PDF document text
    • https://taucaotoccatba.vn/images/news/files/joreriwuvefowokesubufa.pdfIn PDF document text
    • http://hcbarrett.com/user_area/file/71230578131.pdfIn PDF document text
    • http://kubak-ubezpieczenia.pl/userfiles/file/jiwoxiluvulagafakiki.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/kowizotusi.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/jeminitorawave.pdfIn PDF document text
    • http://lagunaapartman.hu/images/user/file/47257588809.pdfIn PDF document text
    • http://ourconn.com/userfiles/file/202109020138267572.pdfIn PDF document text
    • http://hodoan.net/userfiles/file/kojoxegodezumanol.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb2e825005---92189906960.pdfIn PDF document text
    • http://levne-pohary.cz/UserFiles/File/mepesiwizikukimaku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=what+is+the+best+gun+in+advanced+warfarePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE97 17580 bytes
SHA-256: 30399be4db5ee7e2b0d215b59c6d43acfa92a1ab6ef95a5cc8bf924257425e4e

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