Malicious PDF — malware analysis report

Static analysis result for SHA-256 21671ec5a9e78d56…

MALICIOUS

PDF

72.4 KB Created: 2021-03-05 03:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d3fc6214f31444dd0158ee36b05c4ba2 SHA-1: c834a115f5c0d7c8ef1b257fcaf2ca2d0d036672 SHA-256: 21671ec5a9e78d56598203281eecbad7c85fa954ea5179ea2699fd5d48c672d0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=why+isn%2527t+my+hp+printer+not+printing+color PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453908/normal_5fcdb8abb10b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_60077c853bb13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413007/normal_601f76fc26915.pdfIn PDF document text
    • http://cooldomen.space/business_proposal_writing_templateopibp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_5fd9ea376b601.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/jig37QX/falojubaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366028/normal_5fdd59f377de3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415065/normal_5fe9097e934f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_6015d1723bf36.pdfIn PDF document text
    • http://itdiscount.info/is_buffalo_new_york_dangerousfehnd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_603f8f0e64752.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/fGxFig4/jikatuzofewazamukogavu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_603572e26cdb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423728/normal_5fcc57a8e4145.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/DhehiaV/play_ninja_fruit_cutter_game_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vigexosav.myartsonline.com/jajujedusevilewos.pdfIn PDF document text
    • http://vefodipox.myartsonline.com/30868121160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67bd8a60-fa11-4970-94f2-5639c6512500/how_do_i_know_if_my_ge_oven_is_self_cleaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da872f5-71f3-41c7-91e3-7e42b84fe6eb/95884555984.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/sodastream_source_bottle_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec6ded0a-8028-435a-91d7-d64f8e08945d/29156559641.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_off0000deea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEA 5288 bytes
SHA-256: 6469334bbcf2b5f9bb5525e165a52af6c13e7ca9108dc529f3a5871850da7e53
font_01_sfnt_off0000f0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DD 10316 bytes
SHA-256: 9a48ce2c86fe3e1ad72acc613bdf7d6afd1ea7e687de6285eb38c59fd1d8f5e6

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