Malicious PDF — malware analysis report

Static analysis result for SHA-256 947a43076b79c3ee…

MALICIOUS

PDF

85.4 KB Created: 2021-06-28 04:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2f546caf405dbf8679be5c8875ae049c SHA-1: b9e3aa0a62e41aa49a2ede5becae55f68bfca48c SHA-256: 947a43076b79c3ee7fc3804ba12204322e724ba186045c73a31c240ee384a908
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress upload storage and other disposable hosting, indicating it functions as a link farm. ClamAV and ML classifiers identified the file as malicious, likely a phishing or trojan delivery mechanism. The embedded links are the primary indicators of compromise, suggesting the document's purpose is to lure users to malicious sites.

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 http://dioceseofniranam.org/userfiles/file/ginazopig.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee71b0f87a---96792291106.pdf
    • http://shinex-auto.com/userfiles/file/bagijanekirapedulam.pdf
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/oa0u6hbo8q84v159ph10jbm9m7/sosipu.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7887b6c79---mewijozafod.pdf
    • http://harryreichert.de/uploaded_pics/News/file/33346625900.pdf
    • https://ecodiagnost.com/ckfinder/userfiles/files/4539734879.pdf
    • http://gtshotel.it/images/file/lurifugoxelazaj.pdf
    • https://hrmconsulting.biz/upload/files/konadivabunufitet.pdf
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f6fd2c311---12613982930.pdf
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/00bb98f9633a2150a63bc88427bfa843/87661347747.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/35368236501fefc2a62bee6b0507fcc9/nujesivekafarifetapipu.pdf
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/83528ec5cc33c97de17c530fa1f5a7f9/josotulumavubimaneteb.pdf
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/of8pljf7l1mss7700ifsmh8aba/96481967728.pdf
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cadfa86feb---vifetafot.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b9c3e6236---75700643805.pdf
    • http://eurogeographyjournal.eu/admin/fckfiles/file/92404485173.pdf
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078818c9a3ee---soxekux.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/d1c6d8c4ae401333e3ef6e239344c922/77022318295.pdf
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/21e871325cec4968c07a97877a549e5f/5208254596.pdf
    • https://alshamiltrading.com/alshamilfiles/file/98908808025.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f3162b4b2---29219230446.pdf
    • http://global-insurance-broker.de/downloads/rovipikigaradusipaniwoz.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160760320b330f---kujomi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=4+components+of+physical+fitness
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaf1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF1 16792 bytes
font_01_sfnt_off00010303.bin
5ede83f6f205ad22b42fbcfc6318a3a60f0a16a76cdaadefd45a9d52ee5f30c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10303 17152 bytes
font_02_sfnt_off00012fdb.bin
d9a2dcff8a0e9f9b806e984a7bc3b01f72ad0fb4c965be2b3ed20a0a2be8b3c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FDB 10740 bytes

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