Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b60988655000ae6…

MALICIOUS

PDF

85.6 KB Created: 2021-06-26 19:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6ddf7ef08874757db5d3a952dbf7e021 SHA-1: f3cdddc399e08d002604dd0abdbccc4fea2ab30e SHA-256: 1b60988655000ae618a171c4b220588989554b628f05f25f204888b400c25913
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload storage and other potentially malicious PDF files. The primary purpose appears to be directing users to external, untrusted resources, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/8ddaa1c0374a7690dad3490e56c9b177/xegowo.pdf In PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f2e753f97---pemej.pdfIn PDF document text
    • https://bharatbiodiesel.com/userfiles/file/75878571731.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/rifutuwad.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/25058604088.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/28984100749.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce3b472824---berugibivurix.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/47809073052.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095a589bc614---29615475250.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608218ff9308d---30385465899.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca871cc2e8---94562363141.pdfIn PDF document text
    • https://arte-salon.ru/upload_picture/wevudumidaz.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/doxixibefufemujujefizene.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/57200358612.pdfIn PDF document text
    • http://www.mostex.sk/files/articles/file/38996973903.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16094cc8d718ca---60660462912.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/jejusibekok.pdfIn PDF document text
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb115bf69f---worogepiwugodoxutamim.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a97219214---vejiwexapipegofewemira.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/bazexul.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c949b96fb70---30733766641.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bcaeab42729---lojelex.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774855710ea---16092292838.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160925e47d2505---79545287822.pdfIn PDF document text
    • http://networkinglikepro.com/ckfinder/userfiles/files/rireduwobatifokomulafuraw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=military+funeral+protocol+cremationPDF 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_off0000ec0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0C 10680 bytes
SHA-256: f399b38768ea21c74895c345844fd0ef2fa665d8bc40593eecfc38553445357e
font_01_sfnt_off00010483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10483 17232 bytes
SHA-256: 99dd5cbb2977fa9cbcb84cd79569b48898fc74bc7c551d7906fcb733b6090dee
font_02_sfnt_off000130f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1