Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f7aa72af6d6dbb…

MALICIOUS

PDF

73.4 KB Created: 2022-04-06 08:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-18
MD5: 729a7e89fbbb943acb1324e7178d02df SHA-1: 6b877f02c2c8b6a85eaf068f9e709689b5e4edaa SHA-256: 26f7aa72af6d6dbbc55824163c6936c0745ba8e3b4d536d872fb180ce004f6a2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, many of which point to other PDF files hosted on disposable domains or free hosting services. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malware or phishing content. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3155

Heuristics 5

  • 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
  • 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://ragaz.co.za/YmrXLWy8?keyword=two%20long%20parallel%20wires%20carry%20currents%20i1%20and%20i2 PDF link annotation
    • http://noithathoaphat11.com/upload/files/ramilumuraluferi.pdfIn PDF document text
    • https://sivofalurujipi.weebly.com/uploads/1/3/4/7/134700052/53e62d3eba62.pdfIn PDF document text
    • https://lirajibabu.weebly.com/uploads/1/3/4/6/134635624/vowezuxijav.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20220308_D7DF7D900EE34691.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/7697379.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/vefekelifodej.pdfIn PDF document text
    • http://montpellier-businessplan.com/mbp/upload/images/images/upload/ckfinder/renitanarazad.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/mosekegimidesogez.pdfIn PDF document text
    • https://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/dolim.pdfIn PDF document text
    • http://hexindechem.com/upload/files/4191814138.pdfIn PDF document text
    • https://verdadeon.com.br/kcfinder/upload/files/57310121605.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/gulilefosilavavodurigi.pdfIn PDF document text
    • http://kidilangues.fr/js/kcfinder/upload/files/32600043773.pdfIn PDF document text
    • https://tesiligozi.weebly.com/uploads/1/3/1/4/131407846/1966729.pdfIn PDF document text
    • https://jifemeput.weebly.com/uploads/1/3/4/3/134398411/9827004.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/97165221014.pdfIn PDF document text
    • http://www.donkersmontage.nl/kcfinder/upload/files/boluzanagonowekibaf.pdfIn PDF document text
    • https://vokavize.weebly.com/uploads/1/3/2/7/132710687/kofababuvotidi-kifexiko.pdfIn PDF document text
    • https://kuxalureb.weebly.com/uploads/1/3/1/3/131383592/tenonudu.pdfIn PDF document text
    • https://gurufikenifa.weebly.com/uploads/1/3/2/3/132303388/461824.pdfIn PDF document text
    • https://likuxosudiva.weebly.com/uploads/1/3/4/6/134603152/liketakazuvuk.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/8544941.pdfIn PDF document text
    • http://improntediteatro.it/userfiles/files/kepanu.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000a9fa.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000a9fa.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9FA 16088 bytes
SHA-256: d06246de5fbca08a8e71b3266423534d5cc020e17a1f81eafc946de7058d617f
font_01_sfnt_off0000bf31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF31 11124 bytes
SHA-256: 9fe3157cfbcc2f1811c1f1247f74aa27445d84e6ed9c25242c65ee4cc27add5d
font_02_sfnt_off0000d94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94D 17624 bytes
SHA-256: d2120d5178ffafc41d7f40f8cbaabb75b9ffd28508a45b46a03bf00aeecebcd6
font_03_sfnt_off000107c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1