Malicious PDF — malware analysis report

Static analysis result for SHA-256 add6ace871052c95…

MALICIOUS

PDF

80.0 KB Created: 2021-01-25 08:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 158b33c3c47ed3794d129fb8d0cc712f SHA-1: 095f9acf47e897f061d4627be8256dbc7e184480 SHA-256: add6ace871052c95f52597a8a917fc7d10d531a450dde8ae5dc2c018bf729ebb
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, traffnew.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://traffnew.ru/123?utm_term=tangent+secant+theorem+pdf PDF link annotation
    • https://cdn.sqhk.co/dodamewope/xMhfhf9/sazebemodebup.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/ij1qCG7/1194886226.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/gdqjgjb/48665079194.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/ijihijN/liverpool_fc_magazine_free_download.pdfIn PDF document text
    • http://bijopesenof.iblogger.org/bomanoronakukadipu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/barbusse_le_feu.pdfIn PDF document text
    • http://zapizuw.rf.gd/6357949545.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/fedidoponufatobeni.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/que_son_anticoagulantes.pdfIn PDF document text
    • http://vanabigura.rf.gd/google_maps_uk_street_view_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/1445749070.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/bulabavoberabulesi.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/los_angeles_photography_gallery_guide.pdfIn PDF document text
    • http://talusulimatedo.rf.gd/mimebarasov.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/95512270009.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F4 5488 bytes
SHA-256: 7c9e1838eed6757ebf2027cc166119a848f82a3415f2f1a264a0332e99a5045d
font_01_sfnt_off0000f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 11952 bytes
SHA-256: e21e9619733ef13484207392215d4e11ff041831d0adb4e7d522cc446666904a
font_02_sfnt_off00011c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C35 16484 bytes
SHA-256: 815db4d5885c61bf7a6961b0b54beefb75ab881e1b380f1ea3a4c9886edce8f0

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