Malicious PDF — malware analysis report

Static analysis result for SHA-256 472cab125eb75086…

MALICIOUS

PDF

52.4 KB Created: 2021-09-10 20:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 388a4ba3f667c151567b8e9e9d5ecbb7 SHA-1: 0cd5408b0af7947ed649935381a6ad22efd384e0 SHA-256: 472cab125eb75086872569170671e0f5a9ae181d6f559a8d4100266cd295e6d6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to suspicious domains and are structured as a link farm. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a high likelihood of this being used for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8573

Heuristics 4

  • 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.
  • 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://belniig.by/public/file/rusububukodufigoroxud.pdf In PDF document text
    • http://portaldo.eu/contenuti/upload/file/gikaxa.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/gikadoruwotimowigileb.pdfIn PDF document text
    • https://www.bussmann-tiefbau.de/ckfinder/userfiles/files/dadekuliginamukifal.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/38913526273.pdfIn PDF document text
    • http://synphabase.ch/upload/file/29206744824.pdfIn PDF document text
    • https://sayurhijau.com/contents/files/tuguko.pdfIn PDF document text
    • https://kaimano.it/file/36346651676.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/piwozitan.pdfIn PDF document text
    • http://turskazka.ru/ckfinder/userfiles/files/gulonunajonulifomubasu.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/dedobopizuwogevojusax.pdfIn PDF document text
    • http://emploi.nat.tn/ckeditor/ckfinder/userfiles/files/31027861561.pdfIn PDF document text
    • http://vonschickenfremont.com/uploads/files/jizupe.pdfIn PDF document text
    • https://edgecs.com/documents/40559665314.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/80648287384.pdfIn PDF document text
    • http://www.drivingschool-brno.cz/files/files/vekabem.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210910152852_2075069378.pdfIn PDF document text
    • https://turbooto.vn/upload/files/nubusukenofenekixu.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/48321296290.pdfIn PDF document text
    • https://izyskately.ru/foto/ck/files/77546237407.pdfIn PDF document text
    • http://modaxch.com/userfiles/files/sokumoxaxerexi.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/28528b5324205411fcf8c98cb75a7695/sasif.pdfIn PDF document text
    • http://abwingssuffolk1.com/uploads/files/80998295557.pdfIn PDF document text
    • http://a2hgghk.handylover.com/upload/files/nekodexiparorise.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=demon+slayer+all+episodePDF 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_off0000b94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB94D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.