Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ded3159ee282d3…

MALICIOUS

PDF

73.0 KB Created: 2020-12-18 17:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 350fb42b692ee19358d3aac4078cd05a SHA-1: b290d4d82bd06ca812a37e407258588b9061f117 SHA-256: e1ded3159ee282d305b152c1e24fa32c7c78d751bff48da1980adefe077de23c
136 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL, identified as malicious by ClamAV and a machine learning classifier. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanners. The embedded URL, 'https://trafffi.ru/strik?utm_term=sr5+best+adept+powers', is the primary indicator of a potential payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafffi.ru/strik?utm_term=sr5+best+adept+powers
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc364d00a2757459bf2de76/t/5fc7cfcc2431962c2dc323c9/1606930381161/buvuj.pdf
    • https://uploads.strikinglycdn.com/files/19f855e5-3f8e-454a-a4f3-2906fbfc01fa/60326222747.pdf
    • https://static1.squarespace.com/static/5fc59b8916f6d44b07de8fd3/t/5fd16a317c12252903e7e0bf/1607559730135/general_electric_universal_remote_codes_for_roku.pdf
    • https://s3.amazonaws.com/zagubip/2171615374.pdf
    • https://s3.amazonaws.com/megulu/b_pharma_application_form.pdf
    • https://uploads.strikinglycdn.com/files/47b571ad-9a1d-4a4c-8f6f-b12da1f7838f/antigone_character_chart_worksheet_answers.pdf
    • https://static1.squarespace.com/static/5fc6f6e56339345018512de0/t/5fd15c8b23f2866aa37a7d64/1607556236094/33016152670.pdf
    • https://uploads.strikinglycdn.com/files/9477653c-3225-46d0-9eda-ab8cd36aba89/acini_de_pepe_substitute.pdf
    • https://uploads.strikinglycdn.com/files/e0a4bba3-9e20-4db1-9234-becf93979882/ge_cafe_wall_oven_specs.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd02a2dae50a014588123a/1606222498738/metas_internacionales_de_seguridad_del_paciente_oms.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5b9.bin
31fe6ceb99df06c586662bfa421cc4de44de4f11e4c8f30e514f50db5933b8d0
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B9 5380 bytes
font_01_sfnt_off0000d818.bin
e02ad62d2d7d3d7da86a700145ffef66d035a438113ada1dd6bde223aaa51d8b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD818 14448 bytes
font_02_sfnt_off0001026c.bin
fce21d86c2b5faa43a5619d6c859002d414ef8720c10ef6ba746f045f1b0bfa7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1026C 16076 bytes