Malicious PDF — malware analysis report

Static analysis result for SHA-256 032aa945502382b6…

MALICIOUS

PDF

73.3 KB Created: 2021-03-23 12:22:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae682bd345045f4a1e6d2a95c9dd32ff SHA-1: b38707663932ea0fce1c110f8d1a5de8391ff4e1 SHA-256: 032aa945502382b6a30a0ea12e2ede9c114024409f5370d2f3498d350faee469
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one prominent URL suggesting a search for 'chrome apk for android tv'. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the content suggest an attempt to redirect users to download potentially harmful software, aligning with phishing or malware distribution tactics.

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://golowaki.ru/wix?keyword=chrome+apk+for+android+tv
    • http://dewisazovuvoxi.mywebcommunity.org/ezgo_parts_san_antonio.pdf
    • http://biotringel.shop/13177474526xfnog.pdf
    • http://tapozifokun.mywebcommunity.org/40119385888.pdf
    • http://bestsaleshopin.xyz/65370491113fy2lo.pdf
    • https://static.s123-cdn-static.com/uploads/4388041/normal_60027957dc286.pdf
    • https://cdn-cms.f-static.net/uploads/4379719/normal_6050d443d891d.pdf
    • https://static.s123-cdn-static.com/uploads/4475562/normal_6003f89cc9cf9.pdf
    • http://ig-support-service.com/unholy_grails5ez3r.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3c17990d-e623-4fc4-ad85-a9fa70338159/13394943477.pdf
    • https://uploads.strikinglycdn.com/files/384946dc-8398-496c-a7c9-2d38f19bbf0f/zumofofamigazelezamijub.pdf
    • https://uploads.strikinglycdn.com/files/3cf2829d-e948-48b1-804d-018c11381d7c/11489336043.pdf
    • http://jawuwibunoropo.atwebpages.com/wimezonuxawuzox.pdf
    • https://uploads.strikinglycdn.com/files/04a10d2a-7e57-489d-aa10-6fde2990cff4/los_nombres_de_dios_en_hebreo_y_sus_significados.pdf
    • https://uploads.strikinglycdn.com/files/1d306f53-9bb9-429e-b880-e767da24b7a4/cloud_9_vapor_and_e_cigs_locations.pdf
    • https://uploads.strikinglycdn.com/files/654f8055-5fc0-4275-82af-71d948f2ee4d/kuberukozitafevitizapazuj.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_off0000e0d3.bin
b2468e9a0961edf5798c99a510e174556256e4ec255066e7fe85d301f84c5186
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D3 5100 bytes
font_01_sfnt_off0000f204.bin
d417958d1eba3f114036a8b94eaba131c718ce6b13934816765dfad980f51f23
pdf-font-stream PDF embedded font (sfnt) at offset 0xF204 10792 bytes