Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78036fe64ede6c3…

MALICIOUS

PDF

63.7 KB Created: 2021-09-09 08:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 34f481a809accc147dd23718f9eb83dc SHA-1: f2b0dfdd401ffad11f725d13ed812c8154b06c22 SHA-256: d78036fe64ede6c36cc03ca00a3d50182d87b80fe45e956a35fc20c147c6bdb9
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://oniceh.ru/uplcv?utm_term=merge+dream+mansion PDF link annotation
    • http://dotbamboo.com/file_media/file_image/file/giwidi.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/vunafejotuzelawagobej.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/88343711448.pdfIn PDF document text
    • https://trompis-tondschungel.de/userfiles/file/41980592451.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/0dd4c21e5666646d75b8f936c562e20d/54669246457.pdfIn PDF document text
    • http://vakaruinzinerija.lt/userfiles/file/firuze.pdfIn PDF document text
    • https://bursakaynak.net/userfiles/file/43153452710.pdfIn PDF document text
    • http://liubeauty.com/luutru/files/nejomawafulozetumafor.pdfIn PDF document text
    • http://hamdannepal.com/userfiles/file/10279585785.pdfIn PDF document text
    • http://nazycakes.com/userfiles/file/15739967767.pdfIn PDF document text
    • http://vansuloi.com/uploads/userfiles/file/nafonefawuru.pdfIn PDF document text
    • http://robedecreateur.com/img/files/rabigaresutesepazixosud.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/14931401887.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/93453482979.pdfIn PDF document text
    • http://hiace-yoshikawa.com/js/upload/files/11247705427.pdfIn PDF document text
    • https://cargotavio.ru/files/file/detowirusojobuzojosu.pdfIn PDF document text
    • https://lodoshosting.com/calisma2/files/uploads/larafakunefabixan.pdfIn PDF document text
    • https://desco.scp.hr/files/59207723000.pdfIn PDF document text
    • http://archiw.bibliotekalesmierz.eu/img/upload/files/61337465955.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/20788576695.pdfIn PDF document text
    • http://ndc-group.ru/uploads/files/68892667610.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/7e17874153e7f9bb173a1d75b285ea1f/1341384988.pdfIn PDF document text
    • 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_off0000d84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84E 10440 bytes
SHA-256: ad2c1ef7539eb48bb5f91a71b909cbaff6b5e472deaba2c2c872b47229cbd1a5

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