Malicious PDF — malware analysis report

Static analysis result for SHA-256 387ef645857438a9…

MALICIOUS

PDF

51.7 KB Created: 2021-09-09 00:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: 3463f703622163c3d1a8e429d5549125 SHA-1: 5f3c547121fa97077cba1be302448851d09eb4ca SHA-256: 387ef645857438a935da59ab03c2c33f749ba9668960c2f4aa8a2077ea2e1f6c
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7832

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://podiummoda.ru/userfiles/file/6458891427.pdf In PDF document text
    • https://chandrakantmusicacademy.org/ckfinder/userfiles/files/nujolataviluwu.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16137d4f689179---22408263526.pdfIn PDF document text
    • http://palami.by/images/file/bavejutidibarupelimutuw.pdfIn PDF document text
    • https://planningpvedh.nl/ckfinder/userfiles/files/fanul.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/14514292857.pdfIn PDF document text
    • http://pp-aqua.com/userfiles/files/58169461933.pdfIn PDF document text
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/59599850870.pdfIn PDF document text
    • http://susutour.com/userfile/file/pubudifuwapubalowamex.pdfIn PDF document text
    • https://endeligmandag.no/e-brev/data/div/53001490027.pdfIn PDF document text
    • http://softtox.pl/new/userfiles/file/pakapavejojanuvexoxuke.pdfIn PDF document text
    • http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/lamodota.pdfIn PDF document text
    • http://studioguidobarbieri.it/userfiles/files/wonimakatiwokesiwirowiwal.pdfIn PDF document text
    • http://casadiriposomarsala.it/userfiles/files/winevidewifudipufomisore.pdfIn PDF document text
    • http://iburgisidimarsala.eu/userfiles/files/22703210190.pdfIn PDF document text
    • http://basar-hemeringen.de/ablage/userfiles/files/wijeneboxafefav.pdfIn PDF document text
    • http://intelekt.biz/uploads/pages/files/piputorasepo.pdfIn PDF document text
    • http://oprandi.it/userfiles/files/wefusezupabajenudev.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/15179572091.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/tozabigokinoj.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ert3p7e7brru29k0h2scnicih3/68868712305.pdfIn PDF document text
    • http://saraswatishikshamandir.com/singhania/downloads/file/60838115764.pdfIn PDF document text
    • http://vatlieubaooncachnhiet.com/userfiles/file/mobojelemivodologod.pdfIn PDF document text
    • http://thanhnhomdinhhinh.net/uploads/files/23001765395.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/40447677630.pdfIn PDF document text
    • http://kamakuralosgatos.com/uploads/files/38768063369.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=once+upon+a+time+in+hollywood+vf+streamingPDF 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_off0000bb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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