Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac89f3049dc4bd68…

MALICIOUS

PDF

82.0 KB Created: 2021-03-30 01:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93ed4b5b15c039f9eae04587ddf9c678 SHA-1: 9a5befb5b819b1f910bf8ddd0c9d4a50873ffc2b SHA-256: ac89f3049dc4bd684b7c548e1bb358f6789cd28d5220046352636fbc433319b3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though truncated and obfuscated, suggests a pretext of providing an answer key to a practice test, a common social engineering tactic to entice users to click malicious links.

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://jumiwimov.ru/wix?keyword=incomplete+dominance+and+codominance+practice+answer+key
    • https://static.s123-cdn-static.com/uploads/4505102/normal_6006cc8c9c292.pdf
    • http://gukiduwonaxinef.getenjoyment.net/wovulaxomureso.pdf
    • https://cdn.sqhk.co/rarukaboz/1Njgjjm/killshot_eminem_lyrics_youtube.pdf
    • https://cdn.sqhk.co/tovisegag/bjcSje5/vixanazelimivumafememedi.pdf
    • https://cdn-cms.f-static.net/uploads/4366408/normal_6048f79f55874.pdf
    • https://cdn-cms.f-static.net/uploads/4486548/normal_60135a615be83.pdf
    • http://memisada.mygamesonline.org/ejercicios_resueltos_de_movimiento_caida_libre.pdf
    • https://cdn-cms.f-static.net/uploads/4417138/normal_5fdc3498151c7.pdf
    • http://koxuliziva.iblogger.org/joxofowotixisekifine.pdf
    • https://static.s123-cdn-static.com/uploads/4418383/normal_5fc77b299ce72.pdf
    • https://cdn-cms.f-static.net/uploads/4370076/normal_603e753a644d7.pdf
    • https://cdn-cms.f-static.net/uploads/4474450/normal_602c5a43941ab.pdf
    • https://cdn.sqhk.co/dilizilozok/pjivjcq/snake_and_ladder_rules.pdf
    • https://cdn-cms.f-static.net/uploads/4460706/normal_605bb1b6b77ba.pdf
    • https://static.s123-cdn-static.com/uploads/4477401/normal_5fc95d18af28a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kejibanagozimad.rf.gd/losanibi.pdf
    • http://gaditerigasut.rf.gd/28557793350.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_off0000ffb8.bin
1bd9cafd393695ac6a304ea93e4b0d7d8f08df6708580e21d295e174a74d6a83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB8 5412 bytes
font_01_sfnt_off0001121f.bin
28b48cb769b049d246625c4dd3bcb6fc97ae54fe4fc013ccc910ba726326faaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1121F 12192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.