Malicious PDF — malware analysis report

Static analysis result for SHA-256 f065c6e2751f2589…

MALICIOUS

PDF

96.1 KB Created: 2021-07-01 22:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6d2ff11f72db7a92590e1b297e73b03f SHA-1: dad8cc9061cc65f2ca4de644ca1c40a1ca06c575 SHA-256: f065c6e2751f25898c5e76aa798afda6bd4755c645e60dd88227e058bb2be684
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link farm with numerous URLs pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the structure and URL patterns suggest the document is designed to lure users to external sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://clarksville.net/wysiwygfiles/file/80915917079.pdf
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/209d18859c5edd02f5bda844029a3a6c/nadefogebifikixa.pdf
    • https://mfdesign.hu/files/file/54978504921.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b0181000beb---bosuvemodiviwarudukuneg.pdf
    • http://www.cafeinca.com/img/public/contenido/file/wujunapa.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd80d4a892d---resuwoxizapebezagibib.pdf
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e656bc3d4---gugarebodu.pdf
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795c5ae7a3c---96740383177.pdf
    • http://konemara.hu/userfiles/file/sidokemomez.pdf
    • http://banghetretruc.com/media/ftp/file/52257083435.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160891bd01baa8---88242201507.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608b02f4e00f3---56866867519.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/cb976d2ea1ddda85be38b1a8e5730165/34604458990.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/0ae5ab389ee59afb8f7866427af0e664/xabozupatinututevubowawef.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/q5ob1plok8e99h0es1hfgi64k0/fulaja.pdf
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/38ea28a8baf7cfd18cfa582366084f48/rugufufotip.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607d28c314624---9400721589.pdf
    • https://airshow-bg.com/file/kisosajakixizavos.pdf
    • https://kund-in.com/userfiles/file/fabiselunaregafulunadav.pdf
    • http://kbchina.de/upload/gojezuxisapito.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098939b2e503---furavadoli.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/978501d365c5f554cbcc29bbef29dca5/golisuletemukesifel.pdf
    • http://ccspatti.org/userfiles/file/vujuluxusajo.pdf
    • https://alakharia.com/public_html/userfiles/file/pituz.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a677426f523---38054617723.pdf
    • http://www.jobsincrete.gr/images/_user_na/file/nukowudetaraledolanulerak.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ba5daca95---sifex.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+to+eat+food+in+minecraft+in+phone
    • 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_off000112f4.bin
af13a052f29e10549a2d0d0367e25881072b9f176d9f5b9e91ecbdcc10f0abd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112F4 17316 bytes
font_01_sfnt_off00014079.bin
4e62c32d80a8ac0d0af2596fdaefc25418df1faa529aadd9060d71df9ba856eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14079 10748 bytes
font_02_sfnt_off000158f4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158F4 16792 bytes

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