Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e546d915954b838…

MALICIOUS

PDF

45.1 KB Created: 2020-11-05 05:28:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 463736e730c503f6df7cf6c176ef4c26 SHA-1: 2ac0909d2b3c36c3a74bd86598cdd04e03a2e360 SHA-256: 0e546d915954b8386926e42f27e05bfceb7397ab90616bceebd2356134a605ed
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://cctraff.ru/strik?keyword=ss+excess+earnings In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382619/normal_5f9412704595b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_5f9f7cca1afbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8756fb7dc28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5f95113a9ec83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f937126de397.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/dd0921b2-8965-41b3-a2a2-97df5c01f8e1/33302221319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb16f4dc-420f-44bb-b372-ce38fca2f052/25892934039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f431202-e04d-40ef-bd1c-0792e4e7a1c8/wuxune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26ccdd90-6e87-4d07-8f51-730c7cd3e2af/kiss_god_gave_rock_and_roll_to_you_ii.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e21f8540-df95-4153-95bc-15c64b736466/34807492612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa46698-fc1f-40a2-a1c8-2cbcb28efd72/gabude.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_off00006718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 1604 bytes
SHA-256: 2ea26d0cb3053db8ecf761bc7c34f3ea9ec5a364f664aa4c438e20ec58b2f28e
font_01_sfnt_off00006f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F28 5108 bytes
SHA-256: bbfedd8f8880b1b728b4fb134f76a9352b392573f09c3d921475632dc164691f
font_02_sfnt_off0000809b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 11904 bytes
SHA-256: 3ff4ace2e7cee4988d6ef56b6a6ef56ee59524f40a3998f2a4bf580f686b6827