Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8695d15d443f36…

MALICIOUS

PDF

101.9 KB Created: 2021-07-03 04:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bc36b8acf7318f95afd89e80eadc3b83 SHA-1: 3ededebcf80ad8ca7252305ba6d8be4a9e5902c5 SHA-256: fa8695d15d443f36ce6c6c0992d7e68d8a911b6da8b4f97ecf9085b1f2d76431
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains numerous links pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of external URIs and link farms indicates an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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://laborke.ru/uplcv?utm_term=the+second+punic+war PDF link annotation
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160df7d2ae4249---40450421174.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15194b57d9---xuvujojaravakubap.pdfIn PDF document text
    • http://mastera-mix.ru/ckfinder/userfiles/files/gaxegivitanuravaj.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f925a59bc8---28173472802.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/677c31bc03009ff03062d99e2b3c87e0/84397272877.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea05195890---32828063637.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/1i7fu27o52fgkdbe29el6uoftu/wazugoremusakevekulirol.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/7e7f17a6971546f4b5c793d356363801/36769357462.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/67802089220.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/4brcm04nqrfik5d04otfksss7m/88252877448.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/c07d8af455e0797aced9dcb650b5b46d/82416462904.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cff77811c35---57852096499.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/8b3467d1710ec19ff3b1ce3b8f088996/2248769725.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/78456166131.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/peromutanokilarefigujedu.pdfIn PDF document text
    • http://hintzfamilyreunion.com/clients/1/12/12a2788c5de59b93c87e4eff35998d4f/File/bofezovedizukub.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/38452493901.pdfIn PDF document text
    • https://emmaushuis.org/pages/49895329306.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/zomesemexifabidofez.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/20882074826.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa66f75c3c8---judumidatesewilipo.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/lakujewefogupitufi.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160d9155f9642c---xoxuxofevoparoderuduzuzab.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 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_off00012d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D67 16836 bytes
SHA-256: 6bd3a433f555c66ed175fcbccd80f1998317547351302c4b70382cc32adbca9c
font_01_sfnt_off00015901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15901 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17118 10616 bytes
SHA-256: dc36411603392f7360e5100d00665a461c5342dc2ac496dbf2b0c2b4d640c7a4

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