Malicious PDF — malware analysis report

Static analysis result for SHA-256 af03c70890038b77…

MALICIOUS

PDF

60.1 KB Created: 2020-12-21 01:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db17b5f487926c568747603c5417a967 SHA-1: 6238c0e15ef139f6e1e6815a866bf3ea9e1aa3c4 SHA-256: af03c70890038b77d7c67c73f23b20d9177ace864efdb454362189df4e3232dc
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing or redirection scheme. The document body, though heavily obfuscated, suggests an attempt to disguise the malicious nature by including seemingly innocuous text.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/aws?utm_term=adriatique+tomorrowland+2019
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5f96209fe1458.pdf
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/5729640.pdf
    • https://cdn-cms.f-static.net/uploads/4443578/normal_5f9c3a376491b.pdf
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f9be5801fb3e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a351a59d-e04e-425d-ada7-6bb29ece243e/wezugofobewujifa.pdf
    • https://s3.amazonaws.com/kozewuposoridil/42143054367.pdf
    • https://uploads.strikinglycdn.com/files/4b6eee5a-75d4-4c8f-a4da-fb4443a6003e/carl_r_rogers_on_becoming_a_person.pdf
    • https://uploads.strikinglycdn.com/files/20316731-0346-4f44-9488-0f23e29dc14f/hamilton_beach_1.1_cu._ft._microwave_oven_copper.pdf
    • https://uploads.strikinglycdn.com/files/8c45ec3b-8b47-4724-8ea7-bf26ea91d5b7/tesunoxotisumasivakofaxi.pdf
    • https://uploads.strikinglycdn.com/files/640b3e25-e027-4194-b939-48a386fa1b6f/3500_x_12000.pdf
    • https://uploads.strikinglycdn.com/files/54f48feb-28c1-4259-b133-1863293e6cca/81031501669.pdf
    • https://uploads.strikinglycdn.com/files/8d1369ed-921f-413e-bded-e7640a55d04d/george_foreman_evolve_manual.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_off0000ab6f.bin
b96a9bf95c7868dc345afadb4ec2f74ce3ec3232027e3586ebe071685b9a20d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6F 5480 bytes
font_01_sfnt_off0000be0c.bin
2a3e7bd6549561b12e69b01567625aa931e1e9906ca7e60711eb4c79b19adf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0C 10588 bytes

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