Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f979615762bc7f3…

MALICIOUS

PDF

72.0 KB Created: 2021-02-27 09:29:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9b2410078cdca0da56d52347df06e3a2 SHA-1: 328b1d952d405ee2d5fd8fa6080f45bb856b6f6d SHA-256: 2f979615762bc7f34200f57c3a854e4689a747f4b1166caeb51100b11173a135
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/award?keyword=asus+p8z77-v+pro+drivers PDF link annotation
    • https://cdn.sqhk.co/rivogigaweb/ehggjMF/bozilinunilu.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/88968806017.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/fozapesuzuzajojirewawa.pdfIn PDF document text
    • https://motanufogok.weebly.com/uploads/1/3/1/3/131381166/nuzojibizin_xasepuluki.pdfIn PDF document text
    • https://vefenebef.weebly.com/uploads/1/3/4/8/134885139/5688108.pdfIn PDF document text
    • https://rozinezo.weebly.com/uploads/1/3/1/6/131636990/5255449b4.pdfIn PDF document text
    • https://nekonidi.weebly.com/uploads/1/3/0/9/130969497/bivobazima.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/wifuwovafaru.pdfIn PDF document text
    • https://lobepujijas.weebly.com/uploads/1/3/5/9/135966441/6637640.pdfIn PDF document text
    • https://cdn.sqhk.co/wesusogewu/xDfggg1/81166199495.pdfIn PDF document text
    • http://omshop.space/anorectal_malformation_journal08xwr.pdfIn PDF document text
    • https://bosewumakujo.weebly.com/uploads/1/3/6/0/136036310/1638067.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/what_is_a_literature_review_psychology.pdfIn PDF document text
    • https://zitakutuseg.weebly.com/uploads/1/3/5/9/135994262/6873671.pdfIn PDF document text
    • http://fibipowokogo.sportsontheweb.net/warhammer_40k_8th_edition_changes.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/SucX91l/guilty_gear_xrd_rev_2_review.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/garosokasu-jelad-xelal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojibikifi.myartsonline.com/chronicle_of_a_death_foretold_chapter_3.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/lukerowudulabefob.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_off0000de31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE31 5116 bytes
SHA-256: 5d46978182b0d8651f2c7ea4de6e1f7a399a9d5c6ac5b81550b63b6e9f9558c2
font_01_sfnt_off0000efcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCB 10184 bytes
SHA-256: 6a3e8b828eb5a7c568ce09bbe041264271c69760d0a7540038f8816dd1b46753

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