Malicious PDF — malware analysis report

Static analysis result for SHA-256 229eb7227f47be70…

MALICIOUS

PDF

70.1 KB Created: 2021-06-02 05:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 42d36f0487206da7ba774fa970064fcf SHA-1: e791406a0c0de8a16298506bb0e4e01943012bcc SHA-256: 229eb7227f47be704f271b2fc9c0a1b8e3183e6becc0a27319d2708559b7016e
126 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which directs to a URL that appears to be a driver download for TP-Link hardware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://chcial.ru/pbw?utm_term=tp-link+tl-wn822n%252Ftl-wn821n+driver+download PDF link annotation
    • https://xibigulekin.weebly.com/uploads/1/3/0/9/130968960/kejadotodisu.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/gufomixulo-munat-kexabalaro-lekitotorateju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470835/normal_5fc92db4578bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402294/normal_6012112d23293.pdfIn PDF document text
    • https://gixeroparot.weebly.com/uploads/1/3/4/5/134586235/vopeze-wubiju-nodofu.pdfIn PDF document text
    • https://mubikopupisuf.weebly.com/uploads/1/3/4/7/134711770/4372b81b92.pdfIn PDF document text
    • https://tozifurijusewo.weebly.com/uploads/1/3/4/8/134850353/saxasodovilixuvoxemi.pdfIn PDF document text
    • https://wigawiwamenusum.weebly.com/uploads/1/3/5/3/135323889/mudarega-runipiwo.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/6428e51f-b508-4242-bfc3-8799533477e5/61926991638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616f4f81-173a-4b9d-bbb5-f090c9e989d0/unreal_engine_4_models_free_download.pdfIn PDF document text
    • http://nilanom.pbworks.com/w/file/fetch/144424719/zutabibatibifunezaru.pdfIn PDF document text
    • http://lokiboz.pbworks.com/f/94593852789.pdfIn PDF document text
    • http://pafunanukexe.pbworks.com/w/file/fetch/144485256/how_to_water_plants_rust_2020.pdfIn PDF document text
    • http://neruwuk.pbworks.com/f/blockman_go_hack_apk_2020_unlimited_cubes_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/298643b7-f072-4ac7-abe7-f3c00eba0a01/how_much_does_graphic_design_school_cost.pdfIn PDF document text
    • http://jesababa.pbworks.com/f/81403235696.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/f/ocr_a_level_chemistry_june_2019_paper_3.pdfIn PDF document text
    • http://nilanom.pbworks.com/f/what_is_molecular_bond_theory.pdfIn PDF document text
    • http://xiwitanul.pbworks.com/f/fonelab_for_android_registration_code_3.0.186.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_off0000d3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DD 5384 bytes
SHA-256: 8e5c87d41546230596673f81ebdc7720d8b5f12d3287784ab93ef9055b155250
font_01_sfnt_off0000e66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66D 10744 bytes
SHA-256: 7de85c51fcac45529ad009028f77ef360409628a3aa66112c5615fd63479037f

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