Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfafcc95667f561…

MALICIOUS

PDF

39.0 KB Created: 2020-11-07 22:00:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ececc2a4aecaf0282ad610cfe0c3085 SHA-1: 93bdfb20ea22ccf181855847d833ab2a9dddf4d5 SHA-256: 0dfafcc95667f56127764be5100c63f95134b0251dc63d06455b4bd94eccc7bc
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains embedded links pointing to known malicious redirector infrastructure. The primary malicious link identified is 'https://traffmen.ru/123?keyword=do+artifacts+have+summoning+sickness'. The document body itself is heavily obfuscated and contains junk data, but the presence of these links strongly suggests an intent to redirect the user to a harmful destination, likely for phishing or malware distribution.

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://traffmen.ru/123?keyword=do+artifacts+have+summoning+sickness
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/vetetikosotuzafiwop.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/sokilijaw.pdf
    • https://cdn-cms.f-static.net/uploads/4404297/normal_5f9c617a72e8e.pdf
    • https://cdn-cms.f-static.net/uploads/4369191/normal_5fa0b31c715c5.pdf
    • https://pigakuri.weebly.com/uploads/1/3/4/6/134684466/b702b0dfd.pdf
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/2373773.pdf
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/zatenozo-xonuta-dututal-zasebo.pdf
    • https://cdn-cms.f-static.net/uploads/4448719/normal_5f9f71f585a5d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://pazeden.files.wordpress.com/2020/11/86767518253.pdf
    • https://uploads.strikinglycdn.com/files/b19aac07-1bd7-4570-aba4-070e365e978a/ccie_wireless_book.pdf
    • https://uploads.strikinglycdn.com/files/4493896e-f73d-4c52-bbc7-6b1341e8954d/74266427298.pdf
    • https://s3.amazonaws.com/wopari/narajixisibokoroxi.pdf
    • https://uploads.strikinglycdn.com/files/b9846ab9-4c48-4647-8f1a-80d779c6628d/korodatetipilizutabutuf.pdf
    • https://uploads.strikinglycdn.com/files/276aba98-5a60-454d-9024-77b09a0f32e3/34867320846.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aa2.bin
370381846b0dae023255e0668a0b48e255342f6e24148d1e77d3de623a0b7fd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA2 5388 bytes
font_01_sfnt_off00006cdb.bin
c383880501bc930af9fdee6e2f9112c8cc4531a745ecc48b13d13cccd96887d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDB 10036 bytes