Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c6b12dd7ecb248…

MALICIOUS

PDF

78.8 KB Created: 2021-04-04 09:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: f420764468db5714300d718320ded405 SHA-1: 885688751d4e2cc9a2cec8b244682be24c74a0ce SHA-256: 07c6b12dd7ecb24875eb44f9b92ab92f6c1af6f02d33527041d891e83f6f67d2
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a domain associated with phishing ('ponafet.ru'). The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/award?keyword=franchising+agreement+pdf PDF link annotation
    • http://jolovomolosubi.getenjoyment.net/23619587177.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/91913101412.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/Sria6t0/15763333945.pdfIn PDF document text
    • https://cdn.sqhk.co/kubasovusi/ihhfghW/vajotolugozitigim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479673/normal_5fcb6aa2ba9dd.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/39Xgev5/vexukije.pdfIn PDF document text
    • https://cdn.sqhk.co/vonitumefide/LWjfTmy/xotifasokumesat.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/dPgcshj/mlb_playoffs_tv_schedule_today.pdfIn PDF document text
    • http://sebevifa.getenjoyment.net/alice_in_wonderland_full_text.pdfIn PDF document text
    • https://cdn.sqhk.co/bamewimoxatu/djcgeiz/97676979758.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/tCTiijg/train_simulator_2021_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/jdzbhaF/detective_pikachu_movie_trailer_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fc6ae3091dc2.pdfIn PDF document text
    • https://cdn.sqhk.co/mobovogoneja/bhjeody/91095696011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_600db44146474.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Cm9jfWu/13324013923.pdfIn PDF document text
    • https://cdn.sqhk.co/fabadipub/ibhdoOB/44184448742.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/nolunad.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/tezude/mr_coffee_iced_coffee_machine_with_tumbler.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/30072103087.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/vefaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/icao_airworthiness_manual_doc_9760_3rd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/jaderepunejinuzeb.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_off0000f5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EB 5492 bytes
SHA-256: 728fee56d75cc986226c4381e9a2ce5b4e1459ee726188a5ed9d2c9d356f8bed
font_01_sfnt_off0001086f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086F 11060 bytes
SHA-256: c4643576a40e87d6dca5bc2b95e67d7b1633d00485f85ef5fe42f9f9fe38f76c

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