Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b35cc80c15c5ce4…

MALICIOUS

PDF

43.8 KB Created: 2020-11-02 02:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ee7a529daa3510fb39d44964232e693a SHA-1: a005065a54c219fcc586003d716f4aa102f3f51d SHA-256: 6b35cc80c15c5ce4f5406f8ba2f663aacaebf03cb338745dc89b6c9dde22d2db
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is designed to lure users into clicking it under the guise of a movie torrent download. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious URL is sufficient to classify this as a phishing attempt.

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://cctraff.ru/strik?keyword=jumanji+the+next+level+torrents+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f88fbc014103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376371/normal_5f8d65c62e1f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f982fac12d52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f895d246ca80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412151/normal_5f9f31bc59065.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/0af71dc2-6b8d-4e9c-9203-53b8c2d69f8d/51391280421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd00fe03-f7a9-466f-9321-335dff8f73e7/essential_oils_desk_reference_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2478/7867/files/area_of_parallelogram_vectors_4_vertices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed105e5-8307-4bbc-85c3-1015a3059315/setarojijageduw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df0c6444-0e0b-4b2a-a885-bdc2c30fce6d/fopojogimirokexagibozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7269/8565/files/gafuvogejetufesajawuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83ea92e0-026d-4d34-9747-2034946e4bcf/nosajutefeberemane.pdfIn PDF document text
    • http://remote.utorrent.com/tiny/pnmoenIn 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_off00005fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDF 5348 bytes
SHA-256: da48dd96922f0eb434a474d9f3df822751f81804c46052e2ff06305c2f7b8b83
font_01_sfnt_off000071ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71ED 1584 bytes
SHA-256: 3a37df3de72ec4473d970579e20ce90873368aedf9b38621b3d2ccbda9597b99
font_02_sfnt_off00007a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A09 11720 bytes
SHA-256: 823757694f33367bc1a34c2f60a201ae92b1597e09ecd3e726c0d982e3f69ae4

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