Malicious PDF — malware analysis report

Static analysis result for SHA-256 140e0d91a8f61b32…

MALICIOUS

PDF

70.3 KB Created: 2021-03-03 00:58:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4af78b8cfc8b7173704dbf8c3651e271 SHA-1: 9e73f44ee86527cade484da4abe50b49134ca3e3 SHA-256: 140e0d91a8f61b3262011c1b8bde821211b2a6b5b7d857d33d2a606d9a4254a2
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs pointing to suspicious domains, one of which is explicitly linked to a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the presence of external URIs and the overall classification suggest the PDF is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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://dugedepap.ru/strik?utm_term=english+class+101+alisha PDF link annotation
    • http://xawamiwupajev.mygamesonline.org/16268832766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426942/normal_600731f9dc426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471083/normal_601873643079b.pdfIn PDF document text
    • http://malapiwo.66ghz.com/windows_10_update_1803_manually.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501041/normal_5ffde8a3e3b8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457330/normal_5fedf7a06226c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427284/normal_600f0eeca5db6.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/Phe3IfR/murder_mystery_games_ps4_multiplayer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5fce9bd56d636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455180/normal_5ff291cfccf31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409239/normal_5ff5279c1b520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466661/normal_603960a54294c.pdfIn PDF document text
    • http://dapodulasopo.iblogger.org/acronis_universal_restore_tool.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453142/normal_5fe30483dbada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D6 5116 bytes
SHA-256: 5fb3399a1a6a03c8272aa008ca7ecd0867e2467f240ef0163371dffc52c23f5e
font_01_sfnt_off0000ea4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4A 9968 bytes
SHA-256: 095c3f0ab831adf963e29055268afa129313bfcbc29d9a9f084d7f1379a223a6

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