Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e4b2a73544460a…

MALICIOUS

PDF

83.4 KB Created: 2021-03-07 16:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 462578d03b6bb6b97409283697779c00 SHA-1: dae6060f3672c22bbd4f0f1fd9a6bd7ae00b5bb2 SHA-256: d1e4b2a73544460a925d8d1db470ba30652413d52efd671b23ce41237b0a9647
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and part of a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site. No scripts were extracted, but the presence of an external URI suggests an attempt to download or redirect to a malicious payload.

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://botokaw.ru/strik?utm_term=what+is+economic+development+simple+definition
    • https://static.s123-cdn-static.com/uploads/4460465/normal_5fe59c485d7f7.pdf
    • https://cdn.sqhk.co/vakolitakap/behiIij/kingsway_basketball_youth.pdf
    • https://cdn-cms.f-static.net/uploads/4369189/normal_600cee8320836.pdf
    • https://cdn.sqhk.co/mowezeto/VdmXii9/82709355641.pdf
    • https://static.s123-cdn-static.com/uploads/4492250/normal_5fca61c69901e.pdf
    • https://cdn-cms.f-static.net/uploads/4460477/normal_602ba575bdb96.pdf
    • https://cdn.sqhk.co/xufaribo/gjdnIia/pavovogibobagovipoz.pdf
    • http://vuwefedope.sportsontheweb.net/mipubovoli.pdf
    • https://static.s123-cdn-static.com/uploads/4381547/normal_5fc7c06589a1b.pdf
    • https://cdn.sqhk.co/zujumatatub/bohbjg4/remix_os_player_linux.pdf
    • https://cdn.sqhk.co/pilozarager/jb6giie/68141754699.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dfbb8871-b1a7-45d7-9deb-ef78f40e8398/xenipug.pdf
    • https://uploads.strikinglycdn.com/files/d5e38281-1b77-41a9-ac4f-d9958c491471/how_to_create_a_personal_wellness_plan.pdf
    • https://uploads.strikinglycdn.com/files/c3b472c2-9c8f-41e8-a248-d23411ac7254/suwinipu.pdf
    • https://uploads.strikinglycdn.com/files/4bb2b568-87d8-40a0-831d-f9484e2ad052/mysterious_benedict_society_series_trailer.pdf
    • https://uploads.strikinglycdn.com/files/2d021999-55b6-4ccf-a071-217fa644c9fc/66766390129.pdf
    • https://uploads.strikinglycdn.com/files/cdcae99f-91eb-4058-bb02-7718041db8f8/gawaneputelisemup.pdf
    • http://fojosotum.myartsonline.com/what_time_does_the_renaissance_festival_open_tomorrow.pdf
    • https://uploads.strikinglycdn.com/files/7e12704a-d57d-4c80-886f-a81c6d973a2c/moto_g6_wont_switch_on.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001276c.bin
0159ec1c67f9f5c07afbb6879b777baf76cc3c0154843dc7eb70c3994d3e7cf7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1276C 17092 bytes
font_00_sfnt_off0000efb9.bin
63d358e238a8317971ebf8eb9d4b9c9dceaa7254b6d2a80950deb450ab8f5fc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB9 5372 bytes
font_01_sfnt_off000101f0.bin
3761c000bd6b52ebcd97126f7822ca818367d4a1bd19f0295c3302c80663f0af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F0 10976 bytes

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