Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e339993640c4d1…

MALICIOUS

PDF

73.5 KB Created: 2021-03-25 11:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1353f356092c84d989f1b826617d96a5 SHA-1: 82110d6e3ab779c03c9c13c14e1248fc44ec76aa SHA-256: 64e339993640c4d1eef671a60bfa8cb84ac41b84471903f8bb034dbc49889e2f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

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://golowaki.ru/strik?utm_term=how+to+preserve+lettuce+in+ref PDF link annotation
    • https://zepigebilotexo.weebly.com/uploads/1/3/0/7/130739401/4833197.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/N6EVwhb/90933849968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fe5fc3d91128.pdfIn PDF document text
    • https://welajewovire.weebly.com/uploads/1/3/3/9/133999455/633967.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/wawafezut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_5fd8738ebcff8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_5fcd7cde95645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422137/normal_6029aeb9d5fb4.pdfIn PDF document text
    • https://zejinimab.weebly.com/uploads/1/3/1/8/131856072/lowilupididatejowes.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/bjjieLJ/82145431603.pdfIn PDF document text
    • https://wijununag.weebly.com/uploads/1/3/1/4/131438003/5e96ed67e5efcc1.pdfIn PDF document text
    • https://cdn.sqhk.co/dakizenewa/igH0jjn/brave_frontier_2_unit_tier_list.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/a216516a-5ca2-4750-87a1-167c70b2c7c1/whispers_of_a_machine_game_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b93781c-714f-4d7e-b7e3-879ffee40657/i_am_not_perfect_quotes_images.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/91360027027.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/what_is_the_moral_of_the_story_of_the_little_prince.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b136f57-3331-4bfa-a988-6456eebbb6ad/hearts_of_iron_3_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/72398271980.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/90623975569.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/how_to_clone_just_the_os.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_off0000e261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE261 4912 bytes
SHA-256: 2bfb8bf79d5aa2d4bfe3d0e35582e9dbd74291652125d29803a5f5349b949024
font_01_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 11204 bytes
SHA-256: f80f2f9597ffcf91b7e3896bb31a17c9c7d2f2f41d327a4de646ab9a4ae6e94c

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