Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf43058915fc1e35…

MALICIOUS

PDF

70.4 KB Created: 2020-12-06 15:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 437a1cc9e283a895aec525c4caa468f6 SHA-1: 4e4faa861e56fea2695c8811aa823caf420ef834 SHA-256: bf43058915fc1e354601cc22075c64e956d86fcd99189231b35ebd57d6f8ef1a
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains strings related to 'universal remote codes' and the authoring application, suggesting a lure to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=rcr3273r+universal+remote+codes
    • https://vunuvuvoxi.weebly.com/uploads/1/3/4/8/134889930/dikagumot.pdf
    • https://lolijejolo.weebly.com/uploads/1/3/4/4/134442146/gibibevebo_gukilinuzawo_fojevibulo_xumakarupetogep.pdf
    • https://berapiginufar.weebly.com/uploads/1/3/4/3/134316450/9934078.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc7b973717a0f60c4053b44/t/5fc828402dd5737571a96dee/1606953025243/lofodubajeviraxukukogej.pdf
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fc0e5953c02f22b9d2e31ee/1606477206127/17069309622.pdf
    • https://static1.squarespace.com/static/5fc529d86609fd0ee7ad3c2c/t/5fcb5991a3bc3d19152d06d1/1607162258850/33799740775.pdf
    • https://s3.amazonaws.com/rezugekolaba/50747498405.pdf
    • https://static1.squarespace.com/static/5fc0ea36f7cf8c75402afe56/t/5fc8c5b292e74531f3d3b9cf/1606993333504/phonics_and_word_attack_skills_assessment.pdf
    • https://static1.squarespace.com/static/5fc2ac18a3bf4b14abb478a5/t/5fc7db353577ec55121b6fd1/1606933301485/word_scramble_game_download.pdf
    • https://static1.squarespace.com/static/5fc0f0de5bcb0228a282afe8/t/5fc11dc8f8cdb769c60afbd8/1606491593201/dometic_rv_air_conditioner_parts_list.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf541cf3de5e49b55b2b47/1606374428753/64256424958.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_off0000d648.bin
8f47f1a8eca21d1d143ea2a2f119d24d9ce29d55f081f4b1157a34b51e6337e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 5528 bytes
font_01_sfnt_off0000e906.bin
cfd209b8aa00359a2dfa40f95f1949b47f9c468397e2f443d8cfd0f0a95f4f9c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE906 10488 bytes