Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed190f69d57e4c8a…

MALICIOUS

PDF

72.1 KB Created: 2021-02-18 22:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b5dce3f24597a1113aa23907a3deb036 SHA-1: 78230366f8d31e7a73e264e42f5c0f9cfe038df4 SHA-256: ed190f69d57e4c8a80428f99c8f48481a801cad95a30c350ad9f586f54abad7a
96 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://seumenha.ru/strik?utm_term=100+reasons+to+stay+alive+tiktok, likely leads to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious external resource, consistent with spearphishing.

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://seumenha.ru/strik?utm_term=100+reasons+to+stay+alive+tiktok PDF link annotation
    • https://cdn.sqhk.co/basinasedu/ZMmUXjb/strikeforce_kitty_last_stand_friv.pdfIn PDF document text
    • http://leftoutclub.com/bin_anamat_application_formya934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481662/normal_60226af06e2dd.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/U84GYGe/black_widow_avengers_symbol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393346/normal_5fef14c43a665.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/vebalakexobon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5fddfc4c9e9c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_601744333ee40.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/Fhgjcic/battle_tank_nintendo_entertainment_system_nes_rom.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/zemunomipazikez/examiners_report_edexcel_english_language_paper_2.pdfIn PDF document text
    • http://jasigobup.epizy.com/fakuwexejidikulivezela.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_off0000de1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1A 5004 bytes
SHA-256: e518fffbcb934072844d05412ed4be9781c00f21f576e2fe3d3bb29be7748291
font_01_sfnt_off0000ef3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3C 10840 bytes
SHA-256: 60d98a95b2a3489d8ce0731e6c89a15ec683332d637f14f7462f9ba8c2b02a85

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