Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b95e111df9a7449…

MALICIOUS

PDF

79.9 KB Created: 2021-01-08 17:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d467223fb3c8436d794460f33ab9b13c SHA-1: e907fbec5e2eb091907c7c655b8a28afa1d86195 SHA-256: 0b95e111df9a7449ef16f809dbdaee36cf31fccbe680a918cf7a4e59bfbd534f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The embedded URL is likely used to lure the user to a phishing site or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/aws?utm_term=corporate+group+website+template
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5fb7fc95d0882.pdf
    • https://cdn-cms.f-static.net/uploads/4449984/normal_5fa7eb316abe8.pdf
    • https://cdn.sqhk.co/foxidagon/V9gfsjd/dino_world_florida_coupons.pdf
    • https://static.s123-cdn-static.com/uploads/4475997/normal_5fe19f100706b.pdf
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5fc34ef44f51b.pdf
    • https://static.s123-cdn-static.com/uploads/4421640/normal_5fe2996b99df4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/davubewu/connectedness_to_nature_scale.pdf
    • https://uploads.strikinglycdn.com/files/cf6a54b4-05df-4fe8-bce2-e3090cc85221/where_to_watch_fifty_shades_freed_online_free.pdf
    • https://uploads.strikinglycdn.com/files/6504dfc1-c6ca-46f9-9d4b-417eed9848c0/las_ratas_en_las_paredes.pdf
    • https://uploads.strikinglycdn.com/files/73156190-6a9a-49c9-a39b-b8f6b6a6ed6d/valanudozemiwevefe.pdf
    • https://s3.amazonaws.com/ruzaganog/gumilu.pdf
    • https://uploads.strikinglycdn.com/files/d5b8c388-14aa-48d9-91bd-7ec4273b73c1/kaxebubapinojejesasiwuk.pdf
    • https://uploads.strikinglycdn.com/files/721cc825-525d-48b6-aa37-86509c85929f/walter_savitch._absolute_c_._6th_edition.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb5a.bin
9ea3623f594b9b0ae3193ae60cc0d02abbdb5440ede5b38ae718bff54b6805bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5A 5276 bytes
font_01_sfnt_off00010d3c.bin
97747615fca3f5c74cc2a50c88bf48d41db45001a5f51d8e452dbcfcc06ea6aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3C 10988 bytes