Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9689769f7aa292…

MALICIOUS

PDF

64.6 KB Created: 2020-11-14 07:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d952fb9f5219809c1f7ea5b83688f471 SHA-1: 20ff56b32de8934e7f1c689ada8143ad38aaa37a SHA-256: 5c9689769f7aa2928a3e91a52d193d58f0b8d2614f218581959be81b20d51885
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to military duties, aligning with spearphishing tactics.

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://trafftec.ru/123?utm_term=nco+duties+for+soldiers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404290/normal_5fa002639b2a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8df2968a943.pdfIn PDF document text
    • https://wuxotiwor.weebly.com/uploads/1/3/4/3/134335057/6184004.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/levurux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386095/normal_5f8ce193e007b.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/lusegokaves/relikifekipisepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19fcc00d-0d74-47cc-84df-c5013a6ed48c/lozogijejatanakiwino.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/gimapupab.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/63560969769.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/delete_fortnite_account_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/business_letter_introduction_of_company.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/72059463625.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c36a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36A 4776 bytes
SHA-256: 5bb302c8a8617c226a35b1122bb3218488962546727fdccc10bb9032cf995727
font_01_sfnt_off0000d3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BD 10060 bytes
SHA-256: 625bc1c8e4c8bcd5f35961ea998bb3edf738c17ef20586aa2711c6517eee3915