Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a69a33c303fc8b…

MALICIOUS

PDF

59.7 KB Created: 2020-12-06 11:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a2837af1c09d85bbd8c943e86ff0396 SHA-1: b7c03d84301f21141f8a5ab18c106283ed64ed1d SHA-256: a2a69a33c303fc8b269f0195a11073da9f657d47412b087b58f10acdf6cafec4
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with at least one pointing to 'traffine.ru', suggesting a phishing or malware distribution campaign. The PDF structure and embedded links are indicative of a spearphishing attachment, designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7927

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/strik?utm_term=main+theme+of+anthem
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5fa8e160de500.pdf
    • https://zibeselev.weebly.com/uploads/1/3/4/1/134131471/6362540.pdf
    • https://timokejega.weebly.com/uploads/1/3/4/4/134454798/1483672.pdf
    • https://puxolulif.weebly.com/uploads/1/3/4/3/134356270/xudex_kufuxesu.pdf
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/dutuduwav-risowi.pdf
    • https://pogeruriwijo.weebly.com/uploads/1/3/4/3/134340707/528192.pdf
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fab3223aaf51.pdf
    • https://rixemeja.weebly.com/uploads/1/3/4/7/134711448/fixepeporido.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc111213570fb44d1291c51/1606488354550/31210028807.pdf
    • https://static1.squarespace.com/static/5fc5587827a199023ad2f44a/t/5fc7567c1d689b68bf99ee11/1606899325143/lista_de_juegos_retrocompatibles_para_xbox_one.pdf
    • https://static1.squarespace.com/static/5fc5cea240f1034a5cca809d/t/5fc9d59b87b36f46d40111fe/1607062939622/nerusuxasojaxewiw.pdf
    • https://static1.squarespace.com/static/5fc35f47ec917750a3e7896c/t/5fc4e81dbc819f1cf47297d6/1606739998051/34989924876.pdf
    • https://static1.squarespace.com/static/5fc328402e537a05ef17c917/t/5fcc8af3e43f2b00a8a25641/1607240436474/71988521229.pdf
    • https://static1.squarespace.com/static/5fc5dc505bcb0228a2a48d66/t/5fc7cb292431962c2dc214f9/1606929193734/32836699379.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d583.bin
9d2e789f3a43137ddb0f66294325e60a0a32a4be2785e401f9270ff1dbd82f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD583 4708 bytes

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