Malicious PDF — malware analysis report

Static analysis result for SHA-256 79306701ce5ccd9a…

MALICIOUS

PDF

89.6 KB Created: 2021-10-08 13:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 63c13cb9c4e7c86d4f2c8ade15f941f2 SHA-1: bf88c1432d80294a51fc7f94c796b8e3a09bd5ea SHA-256: 79306701ce5ccd9a20df7805570d5e5e8ea33fd9776bab676e91b4db52b2e477
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cructi.ru/uplcv?utm_term=how+many+electrons+are+there+in+gold PDF link annotation
    • https://mirrorlink.com/public/files/files/nosuverutuwujodukizokuk.pdfIn PDF document text
    • https://medbioplast.com/klucharnet/images/file/88608712713.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/zavujulixixusibegiwokegi.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/wezotipusonubaf.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1615388fbca8fd---4570822608.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/dixamogenivazesolarufoz.pdfIn PDF document text
    • http://hz-karavany.cz/ckfinder/userfiles/files/8453672866.pdfIn PDF document text
    • https://toolsatool.com/userfiles/files/71067005086.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/99551343640.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/65427973755.pdfIn PDF document text
    • http://ceramvetro.net/userfiles/file/zadejegi.pdfIn PDF document text
    • http://rivucota.com/upload/files/54384042028.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/0236415ff14f2f5b96215e70e6abe780/zadiwenote.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a9a8dca5f6---rakuporonuvidamuzit.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/pavuwi.pdfIn PDF document text
    • https://xtremefitksa.com/ckfinder/userfiles/files/99331213293.pdfIn PDF document text
    • http://webs.eusko-ikaskuntza.org/files/galeria/files/xeponuwokowatironumefuma.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/revotusuvuzewefugukedam.pdfIn PDF document text
    • http://hydrogears.com/survey/userfiles/files/38298447076.pdfIn PDF document text
    • http://fishtech.org/uploads/userfiles/file/file/bofuf.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/gavebivekazonev.pdfIn PDF document text
    • http://kurtoglumob.com/upload/file/xusurokowewefofimoxekodo.pdfIn PDF document text
    • https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/jemusirojoxitusuje.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28F 11008 bytes
SHA-256: a210c0590f060db6ae6ee936b5213ac5085c6f2e5a7221995442180baff15eb7
font_01_sfnt_off00010bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D7 20304 bytes
SHA-256: 3eb282f52dd098f609563e9b0e7f8dfd93b364060d71e519a5ab800e3892bc74