Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a3845402ddf0f2…

MALICIOUS

PDF

67.9 KB Created: 2020-11-13 04:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 635218ffee9171ed1c5d342a37ab2fa1 SHA-1: d0c9800219347203e10b32b19b39e938d963aec4 SHA-256: 70a3845402ddf0f2205661c77ebb58f2911b8fa2b35660b9c2bd59060da70dc6
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 'https://ggtraff.ru/123?utm_term=nacho+bell+grande'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document structure indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=nacho+bell+grande In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_5fa0c84dd363c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426686/normal_5f9f2b47c755b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5f9127fcb8d8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5f8ddc81754a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e1a18655-83e6-40c1-9bf4-bf2e4d162d2a/zifironikufafumad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff9dd55b-9a17-4f58-a17d-4599d1ca2f8c/exercice_droite_demi_droite_segment_6eme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38e44b61-3acd-4dc7-8dd3-3745d32c1655/nvem_mach3_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75de6dd-c6fb-4bac-97a6-e9709490a12b/gugekefeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0226351d-99f3-4651-b5f0-5e0d1a0086c9/vabut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/133a5647-6961-416b-afac-d2b8c05ca39b/jujoloponosetuxujibakufe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF78 4792 bytes
SHA-256: 81cb014a190690ca6d9a4a523683421e4075d53a51cb8640644f879573382101
font_01_sfnt_off0000cfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA6 11776 bytes
SHA-256: a9e568b327c10cf77b0271498158b8f52ad4a8973f0989b5bc0f88095c047556
font_02_sfnt_off0000f52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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