Malicious PDF — malware analysis report

Static analysis result for SHA-256 e443f8d22ff28a79…

MALICIOUS

PDF

239.8 KB Created: 2021-06-28 04:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cc4a84ca5f02bd1bd80846c3243ab27a SHA-1: 6a526d163cd788247e3f08666e6178b70cc73cf7 SHA-256: e443f8d22ff28a794599775d46710e705bf72591057682dba73461791ce9a779
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to 15 distinct hosts, many of which appear to be compromised WordPress sites used for hosting malicious PDFs. The primary attack vector is likely spearphishing, with the PDF acting as an attachment designed to lure users to these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f654edcc4---koxagagimufufiramer.pdf In PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/3i76aho5kod487eoukijoqehli/20788405619.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/latododajizozelesakewu.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/f8f34f600ebd38e27607429b3f30df43/48347640202.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/linegowolexetukumidegojox.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/pf2j3educ3n1255dn8ilh9po15/sidameliwuduzufivikozib.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607001afacc9b---damin.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/2ca211992b5d4b66cacfaa660822d094/1387590642.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/gukafixemex.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16096a0b163631---lepavanedunuzegi.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608126eb87205---sudofiketekolodu.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/pu4nlerpmedkqb05ii0jdj9ep0/sajelux.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16079c27a7826d---fakijifomikumapires.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/gosavasigibobanitijol.pdfIn PDF document text
    • http://1careglobal.com/upload/files/41548857390.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/8ceb2f92257359a9f096a006e4511569/kaworego.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/fcji7dfnj8rmt1s9298ok1lkq5/ribemijomituvewawovaxubax.pdfIn PDF document text
    • http://okulsanmalatya.com/imgup/file/67764629876.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/oteaav01me9dcr8063v2f589mi/13688072462.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c322f6474a---93783719385.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160725243bd161---86485021950.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=frottage+art+definitionPDF 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_off0003492e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3492E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00036145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36145 10292 bytes
SHA-256: 2ff8ce16cbe00e744eb9db3a8e200f7cc524683f66d1ee7b07ae40536c918065
font_02_sfnt_off00037853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37853 23176 bytes
SHA-256: cba933b88004b4f5a6700d8130ca0cfc72ffed1add2330209e96016c808a85d1