Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c987a0c2af8f5f0…

MALICIOUS

PDF

66.2 KB Created: 2020-11-10 23:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d95248cbcd7302ffbac24a978df35cac SHA-1: 1d4fd968e1aa5548929610bb65f4fee15ab16dad SHA-256: 6c987a0c2af8f5f0618731d7d1016c3061ea14c8f278301758f57297e3704ac9
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 URL is likely used to host phishing content or distribute further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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?keyword=how+the+irish+saved+civilization+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f8e469353716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420924/normal_5f9cdb5fa9b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_5f96f7d4de93c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412158/normal_5f9b273256385.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/20b45596-fa04-4296-999c-f1c6e67df509/rhcsa_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/66484579172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f977378-0240-43bd-a039-ec8fdce30820/xoretifonufisonur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb0499f-ee66-4821-a9ba-af5a1c2f449f/progression_graphisme_ps_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540ee7c4-c1e5-4b7c-8efd-21de9d594fc6/fiziwurefipowife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5564d168-7f7b-45c5-8743-2a3af281629c/dubagubavubarugofupura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9d3d213-695e-4a04-8dec-97467147b0f2/jajafurog.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AE 5408 bytes
SHA-256: 568dc4d6b9858d3cf4fe7f6dd039a648336d6ee92bd370c2bb3b08df5e1c1f65
font_01_sfnt_off0000da2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2B 9896 bytes
SHA-256: f0060b14da4ad8ba73b64fc8b267b71fa5767037690999beb646c5b5659bc19b