Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f69822210b10ee…

MALICIOUS

PDF

69.6 KB Created: 2021-10-13 13:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 703dd64ac731b3ff946e2266ba24c0dd SHA-1: c34bc1d6ee19af2b853a62193be5eaecf98468ec SHA-256: 47f69822210b10eec85e36827aaf6ddcd56b422cace36c18657ecea07cb336c1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate an attempt to lead users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.donboscovizag.org/images/files/39544536552.pdf In PDF document text
    • http://veronikavilla.hu/userfiles/file/51959730962.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16165fc688d3e8---vaxalixomaraxefirituduves.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/71530017989.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/e6ce58a7d787dc21a23ae0edc4d882b5/57843844240.pdfIn PDF document text
    • http://www.rupankar.com/fckimages/file/xebosirekesipikosenifife.pdfIn PDF document text
    • http://hnfhdc.com/UpLoadFile/2021091123080246489.pdfIn PDF document text
    • https://jpt.mysmartedu.com/uploadimages/files/19638487549.pdfIn PDF document text
    • http://kolkandkolkdesign.com/site/data/ws/files/pigoditadonusepona.pdfIn PDF document text
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/neguwotunijanowezekuz.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/siginekufifi.pdfIn PDF document text
    • http://qazaqbanki.kz/data/content/files/tokademixokejabixupokiw.pdfIn PDF document text
    • http://fourfoods.com/images/files/dizilop.pdfIn PDF document text
    • http://xingyeknitting.com/userfiles/files/topujafagetopekiwav.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/25275214471.pdfIn PDF document text
    • http://novosib-sport.ru/ckfinder/userfiles/files/44896295520.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/bozirolotagej.pdfIn PDF document text
    • http://atsrealtyvietnam.com/upload/files/96060231427.pdfIn PDF document text
    • http://italy-ex.com/images/blog/file/19431459680.pdfIn PDF document text
    • http://ozhelalikram.de/resimler/files/makanemolivilesineji.pdfIn PDF document text
    • http://sydjpg.com/images/upload/file/20210926_085653_106.pdfIn PDF document text
    • http://whkmradio.com/userfiles/file/66013122179.pdfIn PDF document text
    • https://goooinggroup.com/userfiles/files/20210906_020050.pdfIn PDF document text
    • http://ptichile.cl/userfiles/file/voreza.pdfIn PDF document text
    • http://www.facyt.com.ar/ckfinder/userfiles/files/megalivuxeluf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/2I9n2o-U8HI/uplcv?utm_term=fetus+having+hiccupsPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB31F 14872 bytes
SHA-256: 302a74c8cd0326443e3dc9fc5975c5adf3ede5a2bc4ce24c986ab6a89e53db80
font_01_sfnt_off0000d8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AE 10528 bytes
SHA-256: df8b4ccaa548e40eea5cd37f0cdb34cfcd8d55efa01c131c18f59ff4ea930b51
font_02_sfnt_off0000f0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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