Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fda25f9d736c6d3…

MALICIOUS

PDF

62.2 KB Created: 2020-11-29 10:24:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4147d006b0134b293c1b488e0072c2bd SHA-1: 8362ed86b91c68037b0f9bac3cb49b82d98073f6 SHA-256: 3fda25f9d736c6d3950e46e6614182e7f0b19af743d8cc320d2b8b2e2b7e28ff
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely a phishing or malware distribution URL. The document's structure and embedded artifacts suggest it is designed to deceive users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=ccna+voice+portable+command+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470677/normal_5fa4f5df1b91b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5fae97f355918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464303/normal_5fad9d8f32ceb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496378/normal_5fbd9ac75f484.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c34ad43-9c3f-4991-b67c-d27e8842e2a0/sony_xperia_e2104_hard_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deeb81dc-ed5e-4d53-a38e-59f21ebb3b5e/jopinitagebora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff3f4b4-7998-442a-b373-4cd18c9dbcad/moxanufamefuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b20eba96-7006-4f68-ba2a-df8df790a66c/makeup_games_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae181d39-79bf-4c00-a1ce-a3ed4758bcd8/99627034604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3493d8-09fa-4fe6-8186-99cabed7e7cd/on_the_desk_explained_that._she_said._i_had_been_the_one.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7761edb4-f5ed-49e9-9d15-53f74df3b8b3/15993846541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25c3a6db-28d4-442a-845f-ad19e4d78ec6/xojiveje.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_off0000b4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D3 5404 bytes
SHA-256: 5b1a1b30e06045645881329735a288ae58f4b2d6abb8271d8ff9fc6baa193d52
font_01_sfnt_off0000c71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71F 10348 bytes
SHA-256: 5cd596721705b94f328bbf78d6ef481132e55102ae479c3be358a65c02f92ef8