Malicious PDF — malware analysis report

Static analysis result for SHA-256 1929b2b7c71fb1fb…

MALICIOUS

PDF

47.7 KB Created: 2020-11-03 18:51:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 520ebb56b4f0f6a0fdd4b8138ea3b6f1 SHA-1: d6f167887aa5733bbfffb478e22badada4f7e1d3 SHA-256: 1929b2b7c71fb1fba9af443e9305decf6a76de37024a60dbd8e656164bc78aa5
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.cc/123?keyword=long+way+gone+full+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f9648410f826.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f932d13acf98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413575/normal_5f992faaf348a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_5fa060523c72c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384634/normal_5f99f7b453fef.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/b26e67b5-0acf-45a8-a51a-5d35fd389cf6/bitebovenejovefixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd57416-fa84-4a3c-af57-2f4d0c4c231f/rise_of_napoleon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2a3717-5661-4f80-8452-61d22a106624/telafivaxutusevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3dc9678-f8e7-42eb-b78f-10587c93f9e8/2013_big_12_baseball_standings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a955968a-8273-4e54-8585-2d4faf44a3e1/john_deere_z465_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bf34b52-1ac0-468b-8136-540da107edb6/94765821570.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_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 5028 bytes
SHA-256: 8992a4ef8071a6bc6bffb25a6e2638962e780583ac816f885c55ab7e11572d97
font_01_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 10300 bytes
SHA-256: 16dfa01299aff0c9a246ec5f7736e16cab0155b13a7a0b9cd0dad671415beb32
font_02_sfnt_off0000a426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA426 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378