Malicious PDF — malware analysis report

Static analysis result for SHA-256 5915862a97800dfc…

MALICIOUS

PDF

47.3 KB Created: 2020-11-03 09:09:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3d49aa918476be943e1264566a720675 SHA-1: 9d6d677e5530136a4a7564560f89c55665d1509b SHA-256: 5915862a97800dfc96f83e59d7757e234bce7ced531764947534d22241f60ee1
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://ggtraff.ru/123?keyword=gods+demigods+and+heroes+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f8c977059a1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417024/normal_5fa03b6d935a7.pdfIn PDF document text
    • https://pomitowu.weebly.com/uploads/1/3/4/3/134389192/gigemibubomukonek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f968423af6b7.pdfIn PDF document text
    • https://velizixevapejaj.weebly.com/uploads/1/3/4/3/134376636/8584010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f88823497467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_5f9994e5b82f1.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/4b79faa4-cac3-4b05-8ccd-53caed9ab180/23602910797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a92c3c-1298-434a-a83f-bd7e14d5e2d6/christmas_lights_lexington_sc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0179cf3-8382-4ef0-85bc-e9ea42ff4c80/wenim.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/lunugifixakovofowir.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_off00007a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3D 5452 bytes
SHA-256: f27aa3154f44b44cf38beda0ae810f2ae45a0aee2caeb5b37616fefb3325e38b
font_01_sfnt_off00008c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9C 10572 bytes
SHA-256: 933e3783c868f116f929f3591a2fb4f67b3579ae01d004eefa7aa7dc510ca31b