Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2d202b4e336de7…

MALICIOUS

PDF

63.6 KB Created: 2021-10-01 02:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 91e7cc8875d5b2852aae08c391ed8076 SHA-1: 1b39dc0a6bbefd83693281233c242aed2101a0cd SHA-256: 7d2d202b4e336de77fe0f39e4d88a511f09544d7ccee1e97a005cb42424520e2
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically flags the document's structure as a link farm on disposable hosting, supporting the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6298

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://hurtmar.pl/Upload/file/rimejufis.pdf In PDF document text
    • http://movesearchesuk.com/userfiles/file/soropirude.pdfIn PDF document text
    • https://idosekotthonaveresegyhaz.hu/files/files/97572479797.pdfIn PDF document text
    • http://www.extramas.com/userfiles/files/gejopaluvixiborov.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/fejonanemulera.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202110010656235027.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/e1592d806d63c407917a9751dd22b9fb/9156487117.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/gizegamuzivo.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/10066997232.pdfIn PDF document text
    • https://onderhoudnlgarantie.nl/upload/file/46886338819.pdfIn PDF document text
    • http://enricobarraco.com/files/tepemufodafebodap.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/jiwalonujufamirekil.pdfIn PDF document text
    • http://controlsystemco.com/cache/fck_files/file/43507823133.pdfIn PDF document text
    • http://bellamy.tw/uploads/files/202109052006045101.pdfIn PDF document text
    • http://vegman-kzn.com/ckfinder/userfiles/files/29005948234.pdfIn PDF document text
    • https://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/7123779966.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/67361403045.pdfIn PDF document text
    • https://nghiepvu.udicmanpower.vn/uploads/news_file/kepazugefewuxetepoleraf.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16141ee272883a---febonekop.pdfIn PDF document text
    • http://brukikostka.pl/uploads/page/file/nibevemutinupiw.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/lelabemu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=newton%27s+second+law+of+motion+answer+keyPDF link annotation
    • https://easyown.ddproperty.com/datas/files/13954904310.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB82C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD043 10940 bytes
SHA-256: 03f014dcf93b26b7f9cb6b56dfd85351d18f3e1bc6ae261f42924fa72276ffc6

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