Malicious PDF — malware analysis report

Static analysis result for SHA-256 2608b06bb24a0738…

MALICIOUS

PDF

101.4 KB Created: 2020-12-29 16:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0a26856ee8f81eff2938f8201b6abed SHA-1: 11f2a5194129bd141418798ccd8a08b7e9b55de3 SHA-256: 2608b06bb24a0738d03bdfd34c903a08637bfa1adf584d71beefc55f32d8b519
96 Risk Score

Malware Insights

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

The file was identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://traffset.ru/strik?utm_term=candy+fever+game+play+online', suggesting a phishing attempt. The PDF structure and embedded content, though partially obfuscated, indicate an attempt to exploit users by directing them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://traffset.ru/strik?utm_term=candy+fever+game+play+online
    • https://cdn.sqhk.co/vapezuwe/ET9iggi/calendar_2020_december.pdf
    • https://cdn-cms.f-static.net/uploads/4414169/normal_5fa467389d391.pdf
    • https://static.s123-cdn-static.com/uploads/4371807/normal_5feb0cce53d72.pdf
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5f9681fe0eccc.pdf
    • https://cdn.sqhk.co/fukafodifi/igTgjGx/ankara_devlet_opera_ve_bale_bilet.pdf
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fc6d74c6b6f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a917aace-0376-41e9-ae3d-c3b5471d62c7/52707020176.pdf
    • https://uploads.strikinglycdn.com/files/8c104426-33f8-4bb3-9071-eb783bbda4ab/conan_exiles_greater_crocodile_pet.pdf
    • https://uploads.strikinglycdn.com/files/6cb32b24-b2e6-459b-8974-e4daa5ac7a26/fahrenheit_451_espaol.pdf
    • https://uploads.strikinglycdn.com/files/8730ef3d-e157-4f0c-9af1-7a681bdf4374/femapupevanonove.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_off000150b7.bin
f05b815231548f3632a2214c01ae0421278c9a585b41c3a855092ea44d71f5ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150B7 5248 bytes
font_01_sfnt_off0001628e.bin
0a9cc54dc24e00fbabef9b8a272346ddb50488bd627b38711cd359a0e3825d7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1628E 11300 bytes

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