Malicious PDF — malware analysis report

Static analysis result for SHA-256 432f8ab7c216347e…

MALICIOUS

PDF

109.0 KB Created: 2021-07-24 09:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 0d75658d21d7e36c7d6c42624daf5922 SHA-1: ff99f68f6c2e706113f14eacd5f10c4d022ae2db SHA-256: 432f8ab7c216347e4f798f4e894ec96f8ba8a09a6b83dcc0dea654159e36ff07
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to multiple compromised WordPress sites, which in turn host other PDF files. The presence of numerous distinct hosts and links suggests a coordinated effort to distribute malicious content, likely for phishing or to serve as a downloader for further payloads.

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
  • 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://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/910a2ea52b163cfb001840dced42d420/95309517863.pdf In PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16099b4b6eed39---15769544661.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f557ca1615---94011687216.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/pujixakelamosolifemewax.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/i36gm8u8cu4kah16agsas3he04/86758017329.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/c51327d1fe92f2ffc6f33e7b4babb757/zegorigojazexi.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba5bdc4b79---nimaw.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f079f64eed---fadesiwepow.pdfIn PDF document text
    • http://dalaichau.com/files/negilakazebakedupagu.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed608d502c7---96264105675.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/a0bcae282b7f2bcc389da9eea5011dfa/89960511792.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/28331815066.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca4c40282a---pivuxapaxuledagubotefeva.pdfIn PDF document text
    • http://geoass.eu/userfiles/files/66439741703.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e85ef0ebc1---wuwuguzaludorivuzebenox.pdfIn PDF document text
    • http://gilleyfamilyreunion.com/clients/6/6c/6ce887ac6ce8bbcacf46524318b1f362/File/83875342292.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/4fee12ad08d3c1a6c75b82ac3e47f446/25837492508.pdfIn PDF document text
    • http://cuacuonductudong.com/upload/files/berinofemajovupata.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c31ceb881---joxetowojamifakag.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/jtcsr4v1on4dovll68litfr7aa/wegadaporebivapeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=peter+salovey+e+john+d.+mayerPDF link annotation
    • 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_off0001485a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1485A 10800 bytes
SHA-256: acff9f6d6c2bb2c094ef12ca4738768eeda9880b46d9b4ac2884a1e02b7ff1f1
font_01_sfnt_off00016126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16126 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17938 16992 bytes
SHA-256: 33e37ba5b45af7d6c0c76f55caeadf85fba20a7fe213b972f13ea56c1d4c3af4

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