Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f1411e2d0687be…

MALICIOUS

PDF

73.4 KB Created: 2021-01-02 22:35:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ac5320ecd4a743c1292082b678b62ef SHA-1: 77745fc1c3f4b0a56d6f77b4cb287c21ec327456 SHA-256: a7f1411e2d0687bed0140fd44ef767b8df566e54d5aedf194c27463fc417aeff
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'traffking.ru', which is likely a malicious domain used to host or redirect to a secondary payload. The document body, though heavily obfuscated, suggests a lure related to geographical information, consistent with phishing tactics.

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://traffking.ru/123?utm_term=southeastern+region+states+and+capitals
    • https://cdn-cms.f-static.net/uploads/4454682/normal_5fb4d99de4d0a.pdf
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/709b354e7bdbc.pdf
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/tepulolelepuzox.pdf
    • https://cdn.sqhk.co/feneradebeza/ROOPZgc/little_heroes_pediatric_dentistry_mission_tx.pdf
    • https://cdn-cms.f-static.net/uploads/4409421/normal_5fc2bf026d7f3.pdf
    • https://dajifavetesa.weebly.com/uploads/1/3/4/2/134234726/zerifanikoserij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/regegozumekoza/barium_meal_procedure.pdf
    • https://uploads.strikinglycdn.com/files/4f3a0723-deaf-47a8-8b5d-c19a08cd9624/10920622617.pdf
    • https://s3.amazonaws.com/benuka/744223539.pdf
    • https://uploads.strikinglycdn.com/files/52345db0-b995-47bc-a8d4-4cc0ba5378dc/12705796574.pdf
    • https://uploads.strikinglycdn.com/files/edca6c0d-070f-468d-95c2-351e357188a7/fejemo.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_off0000e152.bin
25bdb6cb7510316473f2e98ad5db7b01504581c3641ae4408e20b7e597f24b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE152 5436 bytes
font_01_sfnt_off0000f3c8.bin
3f7416e63b2594f71e576b107300d9ab11f56d71e920b0d49652580887c28965		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C8 10968 bytes

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