Malicious PDF — malware analysis report

Static analysis result for SHA-256 89231217fd06da2b…

MALICIOUS

PDF

76.8 KB Created: 2020-11-20 18:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cd4cd753bcdcdd9e2c8b07d1eff2a6a SHA-1: 52bcfea4c5f6b83352fe87ce88f7a7fc237b9caa SHA-256: 89231217fd06da2b0025d7af76b34b1caa07f3c545ad7c953b080bb2acb1b7f3
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?utm_term=2002+lexus+is300+specs' is the primary indicator of this malicious activity. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

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/123?utm_term=2002+lexus+is300+specs
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f87313137c86.pdf
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5f920a3b023bb.pdf
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fb78a1a2394e.pdf
    • https://cdn-cms.f-static.net/uploads/4404964/normal_5f9bf1152dde1.pdf
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8745fbdd2b3.pdf
    • https://cdn-cms.f-static.net/uploads/4407299/normal_5f9b98d92c021.pdf
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f9d3ef013746.pdf
    • https://cdn-cms.f-static.net/uploads/4450624/normal_5fa4986fb376b.pdf
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fab3c1fde168.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d2642855-8b82-41e4-98d6-9821c8895799/timothy_keller_prayer_download.pdf
    • https://uploads.strikinglycdn.com/files/108dfe4d-adcb-4107-9422-e7748ac698a6/govutaxorubuganevolerewod.pdf
    • https://uploads.strikinglycdn.com/files/c4e020d3-044f-4910-bc95-3c334421752c/personality_psychology_understanding_yourself_and_others.pdf
    • https://uploads.strikinglycdn.com/files/4ccf5e1e-d2f4-4733-8b93-c6fdac98e9c1/49362999561.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f5.bin
7fbd28e11ec6ba6b2fc6bc12a4c9e95e12991656b07d0a6da4874b0a8f36e96d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F5 4616 bytes
font_01_sfnt_off0000f0a9.bin
85985cdee72ab017d8c5c89a23ed93044117e0d3564549f9a108e12dd7832b47
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 11972 bytes
font_02_sfnt_off00011889.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11889 4324 bytes