Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6bbd52c00d1443…

MALICIOUS

PDF

73.5 KB Created: 2021-03-31 03:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 74ab36e66dfff9b71f9a4f0ded844122 SHA-1: 6e0cfac526ac8373b16aeeaac3d3453ff54fbed8 SHA-256: ce6bbd52c00d1443f73edc0fa8e0b7c99cd2bb74f541dba15a2dd518d25e4e13
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary lure pointing to 'botokaw.ru'. Heuristics indicate it's a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/wix?keyword=pdf+forbidden+archeology PDF link annotation
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/gokebawuzozobit_laxamok_xelarevez_jefasare.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/geifiji/poxilowezozabux.pdfIn PDF document text
    • https://cdn.sqhk.co/moranunemuk/VZ1LceW/robot_machine_car_transformer_robot_car_games.pdfIn PDF document text
    • https://juwaxevepatasi.weebly.com/uploads/1/3/0/8/130874094/bigeladelekiva-bamezojesafimuk.pdfIn PDF document text
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/remukuzud.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/ijgfFjj/down_the_mountain_lyrics_robinella.pdfIn PDF document text
    • https://lopuvekire.weebly.com/uploads/1/3/0/8/130813144/bejasewogimad.pdfIn PDF document text
    • https://vutuwibomakupir.weebly.com/uploads/1/3/2/7/132740747/2403333.pdfIn PDF document text
    • http://wegisinebirixe.iblogger.org/absolutismo_definicion.pdfIn PDF document text
    • http://xidufekaposepun.iblogger.org/balanopostitis_en_animales.pdfIn PDF document text
    • https://cdn.sqhk.co/nafusomo/hNihggJ/orange_color_captions_for_instagram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/boduxatavepe/beloxonamukukofa.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/duwarifadad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf60ef1a-c7c7-4a09-bd7c-998432447e27/wajuzabajane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c87eecf-6997-44e4-8f24-afa1232ef153/mamimekivugunuxilorapo.pdfIn PDF document text
    • http://gabitotedusaled.epizy.com/zemosakirowadodifet.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/chiavenato_teoria_geral_da_administrao.pdfIn PDF document text
    • http://baromar.epizy.com/cuddledown_sheets_reviews.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD475 5056 bytes
SHA-256: f358a332f58c90bd705ff1ee2e3a9a59efe8cd416b4951e5ddb53e24fcdb55b3
font_01_sfnt_off0000e598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE598 11216 bytes
SHA-256: fb9411f839ea0bd6ad9acc3c6e64205de785ae444f0fd8cd253bd859e47e8bda
font_02_sfnt_off00010a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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