Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0258888a28efd92…

MALICIOUS

PDF

124.8 KB Created: 2020-12-16 18:36:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5436e169b38ff3394d7218097f88a2b7 SHA-1: 8d52e32284d3dd6ed3202508035d983057e3d083 SHA-256: e0258888a28efd92ef4e7debc0e1e9c653095b093492caeb5d09aba5af68048c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'traffset.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Cardano's method pdf', indicating a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffset.ru/aws?utm_term=cardano%2527+s+method+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5fb4d57bde023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5fb252287b081.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/gedimuta/viwelotixewitofobiv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1448ef7301f8b1097bc/t/5fc37f6f9d79364840faa3de/1606647664779/big_piney_wy_county.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/assignment_504_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5d292a2-57d5-4629-8746-081020e1321e/teaching_phonics_scholastic.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65d4f0a2757459b084b28/t/5fd039d0a4b4ef2db69f2077/1607481811912/amphenol_ev_connectors.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/botas_bucaneras_sin_plataforma.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/coordinating_and_correlative_conjunctions_exercises.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1ad861a76734b5ab32aa/1606228698117/madosikobijagen.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/diane_downs_daughter_christie.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_off00018176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18176 5188 bytes
SHA-256: 3c19851cba22fb7299ad7bc2df6f0a6b6ce924b7293687af1da98ae87c8f9b86
font_01_sfnt_off000192f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192F2 20128 bytes
SHA-256: c60ad97489a19083b03bc8876439429a2d10d7e6bd734d3ad1c849b77b1f6d1f
font_02_sfnt_off0001cec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CEC3 16148 bytes
SHA-256: b40e0d0defe972582ad7e739fc4d795bb6a3f7e00f71b5f1de95c03cb5bfb272

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