Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e31be3fb730d811…

MALICIOUS

PDF

44.3 KB Created: 2020-11-05 03:14:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 484f3fa04b0f8f3d5af1481ebcfc04be SHA-1: 1266c2714a29fc05d0856576ca02c817b1ab98a3 SHA-256: 6e31be3fb730d811ceda795547b3a49a5f4ea7389d63f73a575f8c3f62f733bb
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://ttraff.club/123?keyword=desktop+icons+disappeared+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_5fa33121a4f10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5f9a03678a5de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f8fa94323bbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5fa311c661056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384036/normal_5f8ca76aef8ec.pdfIn PDF document text
    • https://rigitugatelimo.weebly.com/uploads/1/3/4/1/134131632/fenesoluzugupimuvi.pdfIn PDF document text
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/0680f80.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/937f3782-b7c6-4e02-b5f8-d733d3d2f2e1/90399950285.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/wave_impact_and_pressure_cause.pdfIn PDF document text
    • https://s3.amazonaws.com/madegusulepugif/3177812651.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/58099729687.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/leg_exercise_machines_at_the_gym.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/make_a_fake_birth_certificate_free.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_off00006094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 5368 bytes
SHA-256: f65ae6f8593ae7f5614cbdd6aaa465acafd882a796395899bf3596af8f9ca4db
font_01_sfnt_off000072e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E9 10424 bytes
SHA-256: 5189fd7d2e3bfcae950f14e740177a786305943cc413ed9f3d202f1f1abaeb00
font_02_sfnt_off00009676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9676 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3