Malicious PDF — malware analysis report

Static analysis result for SHA-256 96620ee7cc86aadc…

MALICIOUS

PDF

61.2 KB Created: 2020-11-11 03:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 64df4402d55a75e4af2e4fb59365808a SHA-1: 93792e09b1d630e60f0f99758a8d80af2b9ef19f SHA-256: 96620ee7cc86aadce90043fdcfbc64f8844dd0bdd0b4afec40d892d91bb3d7cb
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and 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 0.9996

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=diagrama+de+flujo+de+proceso+de+compra In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f88b38d80708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f957d5520bce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449766/normal_5fa9e5df6efed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463262/normal_5fa2dbe8da08e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407784/normal_5f996845b0423.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f884a0e23295.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/joterige/black_hawk_bird_of_prey.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/prentice_hall_algebra_2_chapter_8_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/cogic_minister_s_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d15f46-d6e5-4e03-8af9-d2ce63a7c484/99735769620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2024462-54d4-4faf-bff0-8b18b0220e17/37291743490.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_off0000b026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB026 5548 bytes
SHA-256: 8b45745c7492a4ea1956a9c1d0186561ad74226334aa19e652e40eee3d8d2227
font_01_sfnt_off0000c306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC306 10932 bytes
SHA-256: bce39fc9c022078b1ed5184caee17ff41ab130030ec65f7cdd0b4754de8a0dbe