Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ffd3293dfae38…

MALICIOUS

PDF

81.2 KB Created: 2021-08-26 06:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 3144977ad1a7e394a3234f3bcc434bde SHA-1: 47875af6aac9ac01a75b7b484ee1b59f965ece88 SHA-256: af2ffd3293dfae385e812795e5004801183c05d2b2297da6339cb0d677d15a60
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/5d2988d1341027becf9b5cc2aa1aa9de/fowolemapesozopumo.pdf In PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3500ed4478---fipapobipedugixat.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/49881770123.pdfIn PDF document text
    • http://asfus.net/virgsurv/userfiles/file/muzuteduz.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d23dff01a4---fefijulowenirasajemigir.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9aea235bed---48575205932.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afcf1b97362---83816895761.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c92578e66a2---27033676008.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/82633166494.pdfIn PDF document text
    • http://yenidenyuzlendirme.com/ckfinder/userfiles/files/gulomiripizigukebi.pdfIn PDF document text
    • http://stjconsulting.it/userfiles/files/15256713214.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/f91392fd14f74e3b0ae1960ddd8972f9/degodewukovaset.pdfIn PDF document text
    • https://www.anandtirth.com/wp-content/plugins/super-forms/uploads/php/files/4e6t55b5eurupo5unrtlltpm43/76256328342.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927b6be0814---80973718609.pdfIn PDF document text
    • https://tongdaidoanhnghiep.com/app/webroot/upload/files/22310413149.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/3180956062.pdfIn PDF document text
    • http://mientrungland.net/uploads/image/files/67506694056.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/barewo.pdfIn PDF document text
    • http://fairmonteast1978.com/clients/71195/File/gepiwo.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/904258767.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///28677831186.pdfIn PDF document text
    • https://gosselindesign.com/images/from_fckeditor/fichiers/40825062711.pdfIn PDF document text
    • http://lobi.md/userfiles/file/zopipekovetutason.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=good+manners+at+school+in+englishPDF 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_off0000db87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF399 16836 bytes
SHA-256: 9322b525a877f8530a9a4d8431f53b46064f7adef8afb515970f8feddf03fc05
font_02_sfnt_off00011f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F03 10856 bytes
SHA-256: 046845e6cf48520102ff52e403e3cc2ce96fa1912e980b4f16bbe1f82019fea8