Malicious PDF — malware analysis report

Static analysis result for SHA-256 258da5c3abc6582f…

MALICIOUS

PDF

100.9 KB Created: 2022-04-08 13:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: b9982e671911d00d2b0b8878d598f0de SHA-1: 1e46523e37e90eae6296c56827a7480da3cfc3c5 SHA-256: 258da5c3abc6582f4898b076785c74f27d034221cf9fda122e971ebc62609389
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://cafij.co.za/YmrXLWy8?keyword=belkin%20n300%20dual-band%20wifi%20range%20extender%20manual%20espa%C3%B1ol PDF link annotation
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/nefosepenemasim.pdfIn PDF document text
    • https://vodoxuzet.weebly.com/uploads/1/3/2/6/132681632/kajovuwiloremab-xenawabevi-sowof.pdfIn PDF document text
    • http://palestraarkadia.it/userfiles/files/rupelafeza.pdfIn PDF document text
    • http://kerekagy.hu/UserFiles/file/10083725829.pdfIn PDF document text
    • http://tn-gbs.com/webroot/upload/files/27837504426.pdfIn PDF document text
    • https://panenojaro.weebly.com/uploads/1/3/4/4/134482399/jubidutifiwuju_vuxujikur_ruzubiwebuburog_votaw.pdfIn PDF document text
    • https://stalbeckers.nl/userfiles/image/file/36428341412.pdfIn PDF document text
    • https://nudusomezuriful.weebly.com/uploads/1/3/5/3/135387444/341022.pdfIn PDF document text
    • http://bangladeshceramicsociety.com/uploads/editor/files/78905216968.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/dijofa.pdfIn PDF document text
    • http://baovevietnam-vnss.com/upload/file/ledagokazufidozujenutupat.pdfIn PDF document text
    • https://rovonowevon.weebly.com/uploads/1/3/6/0/136051941/talifineve.pdfIn PDF document text
    • http://asclyziarskyklub.sk/userfiles/file/8875401678.pdfIn PDF document text
    • https://dernek.daynexdemo.tk/upload/ckfinder/files/23898259038.pdfIn PDF document text
    • https://holcom-wd.com/webroot/img/files/99296533430.pdfIn PDF document text
    • https://fegojobakib.weebly.com/uploads/1/3/1/1/131163858/matuvip_wuradesugigero_dulobubun.pdfIn PDF document text
    • https://xafosaxit.weebly.com/uploads/1/3/1/8/131859261/707932.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 extracted file (font_00_sfnt_off00011fe1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011fe1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000137f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137F8 11948 bytes
SHA-256: 027c29bbe9150a5dc216ba3f60487dd6f75f676152c3f270d79f177ffbc79d8e
font_02_sfnt_off00015421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15421 17392 bytes
SHA-256: 59774ab6159d0e97a2c96697d995d809aa7d9ff70758ca09a8fff020aef678d1