Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29b07005c4b0cc6…

MALICIOUS

PDF

96.5 KB Created: 2020-11-14 19:40:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82c70c2bb72e748dff3dcf9a61a0a3ec SHA-1: 10bfe44c3d647c46576c7f84df36cb405010e786 SHA-256: f29b07005c4b0cc60975a4167e1e7755ac587f8a5bb4108c8eb0832812c57759
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'https://traffset.ru/123?utm_term=american+enlightenment+john+locke', which is likely used to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'American enlightenment john locke'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=american+enlightenment+john+locke
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f8f2b9a47c86.pdf
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5fa26c52adaa9.pdf
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5fae0bda5b387.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fifuto/decree_of_reflection_poe.pdf
    • https://s3.amazonaws.com/mejigavukolu/94425825864.pdf
    • https://s3.amazonaws.com/bidurudilidujug/guvowetivevupoma.pdf
    • https://uploads.strikinglycdn.com/files/a3378f06-3b60-4e35-9a70-63c0aee6c5a5/wurafivoweremiv.pdf
    • https://uploads.strikinglycdn.com/files/f1dac492-4c43-4f09-9179-325734109dae/82952221680.pdf
    • https://s3.amazonaws.com/liguwubore/92178108253.pdf
    • https://uploads.strikinglycdn.com/files/af0b4a39-5e2c-41e2-b0ca-3cffdd2d6b0c/28595111028.pdf
    • https://uploads.strikinglycdn.com/files/046d9c66-a514-4419-9e14-5718c54f1462/82754582927.pdf
    • https://s3.amazonaws.com/sibenuvokiwuz/illinois_emissions_testing_locations_addison.pdf
    • https://uploads.strikinglycdn.com/files/1b14af93-8753-4aef-b6f7-808712cd79c4/19483739020.pdf
    • https://uploads.strikinglycdn.com/files/60811452-ef02-4e39-8d0f-a8140853983c/theory_of_entrepreneurship.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_off00013f15.bin
e786c453e521c3ea9bb0effe96e7df6bb5749aaeb4a2dfab9635ea2f48ff5e9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F15 5164 bytes
font_01_sfnt_off00015079.bin
de85d7768c40f2258ce53b2a3baa6c02151113175bc201f6da889c4b1e8ad0d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15079 11108 bytes

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