Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f2466fb2677bf8…

MALICIOUS

PDF

92.6 KB Created: 2020-11-26 07:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f0be9678c6a153a307948eb4f02facf8 SHA-1: 394686411a3ea212f6c99d807318c3ca27c8e995 SHA-256: c9f2466fb2677bf8a176bb1345e3914d01afbb0108c56fe765941c873b40ac7c
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'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a second-stage payload.

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?utm_term=who+wrote+the+book+of+acts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5f9c595e37391.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f877bf691056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475559/normal_5fb2b12b904c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5fafd4d970dbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469370/normal_5fbe3275b1b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_5f8d2ecad80d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5fb01cb227399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5fa97a91e8df2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_5f94656975c2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445739/normal_5fa26226bf4aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pukasojalu/kewisifopupaxexekiw.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/botanica_oculta_paracelso_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/latevitenegatepudut.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/cisco_asa_5506_x_datasheet.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_off000123ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AB 5244 bytes
SHA-256: 504d84cd3b7773ecd9a8fc4169c041598fa391d855efa7e4bb3295c5a5b5e232
font_01_sfnt_off0001359a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359A 15460 bytes
SHA-256: 1fca0cf2165d23093d1df065846e30a796ddfc85fd1973d69b06da473ddd2346

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