Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa17d5fc3b59baad…

MALICIOUS

PDF

75.6 KB Created: 2020-11-26 17:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: de9d888c9af1920bf56e805a2e90da3d SHA-1: 93b2658daf1ca464f1e81ced01139801be4cb8cd SHA-256: fa17d5fc3b59baad189aadee659d4edaadc85abc6c26dcbb35d5c10b7bbf17fc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 https://traffine.ru/123?utm_term=8+ball+jacket PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374688/normal_5f89cd4b99984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_5f8d34aea255f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f88b38f4c4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447669/normal_5fb3c5e85cbd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_5fab9d1433b3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478670/normal_5fbf16433d25b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_5f9547b42fa60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_5fb2ebf777d0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_5f9ff0e9c800c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421629/normal_5fa2a60dbc42c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6222fab-2fbc-4c91-907c-c6a82745f2a7/fuwugodufutamunebufifen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c998ad-98c5-4e5a-9bda-e47de3a8b271/hitchhikers_guide_to_galaxy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a01b6d7-fe87-4c12-8e80-6e45c2f63442/yes_it_is_in_spanish.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000d37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 4900 bytes
SHA-256: fe362e197b9b27b713e0a7f45d1a9139c29f5be59806ca83235a28b27fafaa78
font_01_sfnt_off0000e442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE442 10820 bytes
SHA-256: 892e6877a0d2998748228c31c8edf0b4fa47b2f3868745dd70a84257e0575312
font_02_sfnt_off0001090c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090C 17176 bytes
SHA-256: f36ba291c71c31480f1f1949df1f2de6c1af360b3dcb366ebe807bb51fb0b02f

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