Malicious PDF — malware analysis report

Static analysis result for SHA-256 0206a1436e44d9a6…

MALICIOUS

PDF

68.8 KB Created: 2020-12-27 15:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80372c6b3947dbe88021ee5cf9ecb1d7 SHA-1: 513d3d69fab586d78c2a590fc517a3fc10770d76 SHA-256: 0206a1436e44d9a63c182a26442bce90a902c3a555c6e8c884660b385ddb90a2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to reference 'Nba 2k mobile basketball app store', suggesting a lure to trick users into clicking the malicious link. The presence of this link and the high confidence ML detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=nba+2k+mobile+basketball+app+store
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tizowodifi/uv_visible_spectroscopy_working_principle.pdf
    • https://s3.amazonaws.com/ligole/likidezefowoxuxofozogoba.pdf
    • https://uploads.strikinglycdn.com/files/bd6219db-e65f-4157-add7-fa9ce2e78ee7/betty_crocker_yellow_cake_mix_recipe.pdf
    • https://s3.amazonaws.com/bitajemisajoz/trastorno_alimenticio_en_nios.pdf
    • https://s3.amazonaws.com/mubefula/ace_awareness_week.pdf
    • https://s3.amazonaws.com/wurivuve/autocad_2017_crack_xforce_keygen_free.pdf
    • https://uploads.strikinglycdn.com/files/10d38cc9-0933-4d31-b885-62e809f480cb/telebuguzoxeteximudupu.pdf
    • https://uploads.strikinglycdn.com/files/27c2fa3d-5405-49ad-aa41-9b3359ec44bb/jexeralogagunuzur.pdf
    • https://uploads.strikinglycdn.com/files/dd658c74-3662-4c8a-ab10-c7e0fed5682d/suwudol.pdf
    • https://uploads.strikinglycdn.com/files/d4fe6392-0a21-404e-86a1-b7ea867b2823/dibukunevuzopowamegi.pdf
    • https://uploads.strikinglycdn.com/files/ae576080-4a11-4f3d-91cd-924a13afe8ab/63789498966.pdf
    • https://uploads.strikinglycdn.com/files/41833563-2aeb-4a9b-b06f-999b8b083835/macbook_pro_battery_cycle_count.pdf
    • https://uploads.strikinglycdn.com/files/321583a0-776d-4de3-bf8e-6f344ea8ea5d/introduction_to_optics_pedrotti_3rd.pdf
    • https://uploads.strikinglycdn.com/files/aac333b5-9099-49d9-a6de-5225d1fcb979/10155489638.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_off0000d0bb.bin
97ad297c6651f6aa726398888bd7dd7ea910c19e4c32e8f6ff6b84aeb41efdce
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BB 5268 bytes
font_01_sfnt_off0000e297.bin
e556571bd785581a4212e73abe773c67c64186f9fcc7df73f7028eca1eb4c283
pdf-font-stream PDF embedded font (sfnt) at offset 0xE297 10460 bytes