Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2a2b35f1a8b65b…

MALICIOUS

PDF

43.8 KB Created: 2020-11-07 07:13:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b1bab7a624e9ff1bf6553778e528ffb1 SHA-1: bf8eb04379032853545ce569178457e0c15076ae SHA-256: 5c2a2b35f1a8b65b79fb2c14503df71a66d13b6c18f7837074515df58119f6d5
96 Risk Score

Malware Insights

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

The PDF document contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The embedded URL 'https://trafffi.ru/aws?keyword=76+unblocked+games+unblocked+minecraft' further supports this, presenting a lure related to search terms. While no explicit script was found, the structure and heuristics indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=76+unblocked+games+unblocked+minecraft PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443329/normal_5fa5901e3a862.pdfIn PDF document text
    • https://valoxapemep.weebly.com/uploads/1/3/4/3/134305175/volurawibelaje.pdfIn PDF document text
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/fifisovilunij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_5f9eebefa96ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f904d221ffac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417986/normal_5f99f77c328c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_5f9a2501796e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f912910d6ce5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f8b7638a44ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413121/normal_5f949b7c46cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424682/normal_5f9f3d010f301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_5f9715de7e080.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/01868b36-2a4b-4e84-8e52-3441eebdf8f1/user_manual_for_canon_rebel_t6i.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c55d43c-6fd1-4801-a51d-e0d1d6fdd8eb/votoxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25c17b5e-f21a-4a70-ace8-6c9722ba0d08/genetics_comparing_mitosis_and_meiosis_coloring_worksheet_answers.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_off00006ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 5684 bytes
SHA-256: d465647f97c51fc7921d3eaf381af5d2027ba43e42422c8064b845b0dedccdf1
font_01_sfnt_off00007ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE7 10376 bytes
SHA-256: 2e9848ac32f697bb36e546a286315639a781fb2b775411b88a328cfee3110a53

Open this report in the interactive analyzer, or submit your own file for analysis.