Malicious PDF — malware analysis report

Static analysis result for SHA-256 5784f2e8b76511b5…

MALICIOUS

PDF

77.8 KB Created: 2021-02-07 12:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d5fd7db56e5bdd9b21af3cf80452eab1 SHA-1: 446763f39d7488347ba6e7d2d58784f60455ad53 SHA-256: 5784f2e8b76511b5c9739250f44116d6e97dac18cb4cd0c0088cda2c5f739428
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=edible%20oil%20refinery%20process%20flow%20diagram%20pdf In PDF document text
    • https://ragojozuzaz.weebly.com/uploads/1/3/4/6/134668900/xiwutotezurak_kufuwe_gusir_zidavazo.pdfIn PDF document text
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/desevag-wulefamewukano-puwidubezib-nobopoxebotup.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/eVW4jah/tribal_tattoos_drawings.pdfIn PDF document text
    • https://bagirarivevi.weebly.com/uploads/1/3/1/3/131384609/madalodukuluj.pdfIn PDF document text
    • http://mattelipsticks.site/motivation_letter_for_mba_programme31k7g.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/hsMgfgj/74780312209.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/iBiaZih/nuts_and_bolts_hardware_kearney_missouri.pdfIn PDF document text
    • https://xefulexemifin.weebly.com/uploads/1/3/1/3/131398452/zupivaxuvalexa-pasiwafev.pdfIn PDF document text
    • http://mifvideo.space/backstage_pass_templatelpykf.pdfIn PDF document text
    • https://cdn.sqhk.co/sezelijimofi/gfhejey/gapinew.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/mojenid/60743715045.pdfIn PDF document text
    • http://presentinsta.site/paviresidiwumi7k3.pdfIn PDF document text
    • https://cdn.sqhk.co/gezefesete/jcjc8ge/qatar_stars_league_results_yesterday.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/jedadokuti/50233716230.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/form_to_amend_birth_certificate_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/undrip_text.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/newest_meme_formats.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/91265359084.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_off0000f17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17D 5764 bytes
SHA-256: 6da96ec6b4bbf0b27c53957ac263424f13900f1a7da44b46ae062a0821f3e61f
font_01_sfnt_off0001052a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052A 10824 bytes
SHA-256: b7d62a509cfea68f740dcd7f591eae1fd39f4ad88b94eb5ad23ba19e31fe98b0

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