Malicious PDF — malware analysis report

Static analysis result for SHA-256 debbe5c0e6772264…

MALICIOUS

PDF

93.1 KB Created: 2021-09-04 20:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 946f7da53ebcca7e6d5cf75d38bd3336 SHA-1: 3fb1a4c4a9787b0d0418643c4655bb94599a7929 SHA-256: debbe5c0e6772264635f9cc5cb6f9f807feb42b1d568eebeb8045468da9b82f9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating it is designed to redirect users to potentially malicious websites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports the malicious intent, suggesting the document is part of a link farm hosted on compromised or disposable infrastructure. ClamAV detection confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=priapismo+pdf+2017 PDF link annotation
    • http://suncitygroup.ir/basefile/suncitygroupir/files/41951028701.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/3b14ed2654e314b8c0a22a691ef7bea4/9187454068.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/22035451119.pdfIn PDF document text
    • http://razzledazzleevents.in/userfiles/file/34592166557.pdfIn PDF document text
    • http://foodzipo.com/uploads/userfiles/files/mifutuwu.pdfIn PDF document text
    • http://delve-cr.com/uploads/gebejo.pdfIn PDF document text
    • http://wghsclassof69reunion.com/clients/b/b3/b33699c65747f61a54cd06c2fab73d22/File/17836830532.pdfIn PDF document text
    • http://csc0512.com/userfiles/file/20210802233551_grkvat.pdfIn PDF document text
    • https://faguaflowers.com/images/admin/file/pikagovuxipejebibol.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/baxebabupuluxatisikuwo.pdfIn PDF document text
    • https://fishboat.hr/files/bofukivumixozilev.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/ace7639002344964dfba875471763db7/96611567369.pdfIn PDF document text
    • http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/39213613652.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611e5e16f2cd7---20801594488.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/b6ffc7db01985d7db4f4c4493adcec40/896168005.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/7245908585.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/8q2pkabni3m718gqnm67dbs2p8/56032026836.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968c984a882---zobebaruxomava.pdfIn PDF document text
    • http://48bulls.com/js/upload/files/49537254909.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/77493897545.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/gulisodovasajute.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/spfibf3ajs4jsqn8ei21015m72/retujetogagelavazi.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/jonujasulixulukupe.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/vunivopajujinuxofamofol.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_off00010239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10239 10624 bytes
SHA-256: faeb2ea3bce58e55282bf148451f52ed8e8e021b57a79d9257fef2b191218216
font_01_sfnt_off00011a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000132b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B0 19740 bytes
SHA-256: 1620eecebfa2b54b1c57ad7a771204aab28f20242fabb3645bff2e61cfa17368

Open this report in the interactive analyzer, or submit your own file for analysis.