Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e154e5103a07024…

MALICIOUS

PDF

45.3 KB Created: 2020-11-03 12:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0553df142bf1825e4a1836fc67e77475 SHA-1: e80d3477092255bfd2943f31eb8b21ba1861717c SHA-256: 1e154e5103a07024c51d28fde27c8cd9ccdc69c2e08cb77b144f80c7677fa20f
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which likely serves as a lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firing suggest the document's primary purpose is to redirect the user to malicious infrastructure.

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.ru/123?keyword=fenix+pd35+manual In PDF document text
    • https://fazolusafiwef.weebly.com/uploads/1/3/4/5/134585025/naluj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f97c2386bf8b.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/7072545.pdfIn PDF document text
    • https://bososafevibusup.weebly.com/uploads/1/3/4/0/134041518/xafofisine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_5f96e57a2aff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f93dd8264be6.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/binadamejosenedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_5f9819a2d68f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f8ca25ab92d2.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/b36e017b-afda-4f91-a7ea-17216dc2d138/harley_sportster_workshop_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abadd769-afa2-4377-b2bf-002478c711f5/77937660220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c8d2b5-8d72-4922-a120-be476ece4f1a/28011401764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c231164-cb25-4e5d-a7a7-65796cc97501/participle_worksheets_with_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e677369-83f0-4437-8d03-69bbf1c001af/63441534847.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/zopupo.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_off00006492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6492 4088 bytes
SHA-256: 58c5f8fd2c3380bbe5b24b4e66ee69e361adffeb8d6a409367f95ab9c57a4c96
font_01_sfnt_off00007324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7324 5144 bytes
SHA-256: da13d9c969b61498fe728e039b4a6e115e3a2d5acea81636e2c0bb468b16253f
font_02_sfnt_off000084a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A2 10432 bytes
SHA-256: 3248dae715a217551392e6ddbfe6d6ae9da2461c6184c680fa39bc370f15909e

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