Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fc2fb024bb9e29…

MALICIOUS

PDF

81.0 KB Created: 2022-04-14 13:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: f420d770187d2e8e1119d6d5710fbf04 SHA-1: b43a195dce4b9a6771cdddcf2d2ef4f6eff2dd3e SHA-256: a4fc2fb024bb9e29b40a03762acaba31a8437744a3add2bd4ee709d4ccf5ddca
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://yoyep.co.za/YmrXLWy8?keyword=easy%20electric%20guitar%20songs%20chords PDF link annotation
    • http://abogadosaguilar.com/ckfinder/userfiles/files/75452170618.pdfIn PDF document text
    • http://agenturamotivace.cz/uploadfiles/file/87505549347.pdfIn PDF document text
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/848808.pdfIn PDF document text
    • http://bilasiparacollege.org/assets/kcfinder/upload/files/gikoguvexamilomosupu.pdfIn PDF document text
    • https://vetigepar.weebly.com/uploads/1/3/5/9/135989985/ribetidejam.pdfIn PDF document text
    • https://moxujudafetofa.weebly.com/uploads/1/3/2/7/132712376/4829a549466013a.pdfIn PDF document text
    • https://jupelokuxaw.weebly.com/uploads/1/3/4/6/134601506/faxad.pdfIn PDF document text
    • https://lezolofajikop.weebly.com/uploads/1/3/4/3/134353880/1606457.pdfIn PDF document text
    • https://www.nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/28399981166.pdfIn PDF document text
    • https://www.iccct21.scrs.in/kcfinder/upload/files/xikipomebafebot.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/34809523419.pdfIn PDF document text
    • https://originalbau.hu/imagesfiles/purezul.pdfIn PDF document text
    • https://wikuxokogex.weebly.com/uploads/1/3/1/8/131872144/dasiverolemefa.pdfIn PDF document text
    • http://pnl.ac.id/asset/kcfinder/upload/files/7722533293.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/16732868804.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/89395028917.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_off0000d996.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d996.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD996 17264 bytes
SHA-256: f094c893d20f70691a80b59a26ce9256feb643e5b1fdb78dc1c42b53679e7145
font_01_sfnt_off00010692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10692 10848 bytes
SHA-256: af790568d94fbef52785a5148e07c2c1a92ca9309ce1538ceedd556753e43419
font_02_sfnt_off00011f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1