Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a462d81d24f913…

MALICIOUS

PDF

63.9 KB Created: 2020-12-18 11:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 22e1677778eb71fb0fa87cea8655013a SHA-1: 1a8b2b67eb1e18e1b02c642f0ad5c291b67efbba SHA-256: e3a462d81d24f913aa0f2161713ecf3ba19c356e792b2064a2bba36e5897c54d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a ML classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, trafffi.ru, which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=hey+3+next+to+normal+lyrics PDF link annotation
    • https://volinamonapefez.weebly.com/uploads/1/3/4/4/134494747/3c5e786581.pdfIn PDF document text
    • https://litepuvib.weebly.com/uploads/1/3/4/7/134741427/lisapakewofebufitiva.pdfIn PDF document text
    • https://xapotitiguwux.weebly.com/uploads/1/3/4/6/134668809/nutosopujobux_sules_zazukulefaken.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/0cdcd388159498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/67e5729e-6f7a-4a7e-9757-b3b470c2eefd/vupefuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e88f55-d188-4d69-aa57-78a509a7a041/dissidia_final_fantasy_opera_omnia_apk__obb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c32ab1c1-81ac-41d0-b0f7-0a365e1f0205/sejuwawisimix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b293eacd-f09f-45dd-9d22-76c65ec44120/gopro_hero_3_silver_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358b5b98-e910-4300-950a-b0f451edf8b0/biochemistry_concepts_and_connections_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ffd688c99b6d37c18e02/t/5fcab387c86a9632fae1fd1f/1607119753395/nobefo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54b0340f1034a5cc5e190/t/5fd22ec3b0f0f842d7b078e5/1607610052231/bamitol_walmart_precio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/435be65b-f9c7-4d24-b933-41cfb939d6de/41799559339.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB102 5028 bytes
SHA-256: 8df9c38e445b021864ee5f3a280d479f060c5b861c981108c003dd150e873695
font_01_sfnt_off0000c1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F9 10188 bytes
SHA-256: 0aba39324382e37f5c4ef75fe2b1796891d4e10bfbcfd0740a8f4361e109edbc
font_02_sfnt_off0000e4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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