Malicious PDF — malware analysis report

Static analysis result for SHA-256 179f9816ff640a78…

MALICIOUS

PDF

239.9 KB Created: 2021-03-22 03:12:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 51dd45284f7ab780cfb7bb7b7070a967 SHA-1: 5809470bcdbcc7b29483c1949733432160ead0bd SHA-256: 179f9816ff640a78c88ba237348e56ca54f7a9a2ba02e4d710bd2d46122f62cd
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to 'annexation of crimea summary pdf' and the authoring application 'wkhtmltopdf', suggesting a lure document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://vilenefex.ru/award?keyword=annexation+of+crimea+summary+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387040/normal_6046f3576ed58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459794/normal_5ff8c0ba9909d.pdfIn PDF document text
    • http://health-top.ru/glock_armorers_manual_2017lplkz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5ff758303170c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416671/normal_60299e8529379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412900/normal_5fd257ea0c561.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374198/normal_5fee67731a417.pdfIn PDF document text
    • http://mebelrostov.ru/el_caballero_dela_armadura_oxidada_capitulo_1_resumen_cortorbxd8.pdfIn PDF document text
    • http://masevetito.22web.org/black_anime_characters_one_punch_man.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_60055ba4d65c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_600bab9789333.pdfIn PDF document text
    • http://shop-kid-toys.online/depexitiwoj1f01u.pdfIn PDF document text
    • http://vejofewi.iblogger.org/north_haledon_police_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5f8b0e40-2141-4341-98ab-6145db4b8156.filesusr.com/ugd/2072cd_b3aaa3b20e1742a0996bf9137cc0d405.pdf?index=trueIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_887bcb83f2d74b5987c3781a8ce031ff.pdf?index=trueIn PDF document text
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_a03deb6fece340b3999b7f0f1e350118.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3389058-31df-44dc-a181-3e2f82b8e0c8/daxozuwusimov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8a9352-4658-49fc-8b5c-ef649e5526e2/state_two_primary_reasons_for_writing_a_business_plan.pdfIn PDF document text
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_476e4fc823854bc39251c9d2f34509f3.pdf?index=trueIn PDF document text
    • http://munekekenagixo.rf.gd/workplace_safety_tips.pdfIn PDF document text
    • http://kanisisasulaba.rf.gd/brother_mfc_7340_toner_cartridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504f5c52-dfaa-4b7f-baf5-e5884ea3c95f/sword_art_online_light_novel_volume_18_epub.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_off0003613b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3613B 5428 bytes
SHA-256: fa92280f62b0a02b9dfda7530745263e87c53da409171df353f73589a6c5d0f5
font_01_sfnt_off000373ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x373AE 19996 bytes
SHA-256: 22d83c0c2d17d99ab48c718677bbf3786f820cb7f265c4d009a8015a7a919fb6

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