Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e4d0840005049b…

MALICIOUS

PDF

75.6 KB Created: 2021-03-10 03:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c420ef0c2b8ca1f9167345ad91b48f15 SHA-1: 6ffc46a5e1ba654aa10b1b179734652ef5e3fcd8 SHA-256: 86e4d0840005049bfc7e29e126b8e21535d7e50774525e3114b27ba27c092452
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains text related to game mods, suggesting a social engineering pretext. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/wix?keyword=rise+of+berk+mod+apk+revdl PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366344/normal_6013223e6e896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416132/normal_603334d513a57.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/ihhib2o/flying_superhero_vs_incredible_hero_street_fighter.pdfIn PDF document text
    • https://cdn.sqhk.co/mudaxomemut/uiaXYjg/download_furious_drag_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_601f3771be21d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408190/normal_5ff8941fd250c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371509/normal_5febb031d3797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404969/normal_6036118dafdf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_602be100081ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478146/normal_6045e718c564a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472186/normal_6034f11a2e71c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444866/normal_5ffbb73aa2f13.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/bljd5Hv/xizugaxetad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fe18482307f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370269/normal_5feb4b1a1b6d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5fe783874b774.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/943d171c-da97-4264-962e-6dc7d33a79c6/81722050634.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/sandisk_8gb_clip_jam_mp3_player_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62a5ea3-74e5-4718-b8a2-a072541eaa91/7437797687.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/16384991662.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/45851683937.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/how_to_calculate_the_magnetic_field_strength_of_a_coil.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/vebusu.pdfIn 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_off0000eac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 5456 bytes
SHA-256: 9785654f42b7fdbf7329e415147486b4615395791e269a4ac0c14e732796ab7f
font_01_sfnt_off0000fd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD47 10448 bytes
SHA-256: 87940e74498eea477b13acfc54bb805dbf88d7e039183aaac90a63a8456d16dd

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