Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87e2709eafdc418…

MALICIOUS

PDF

80.7 KB Created: 2021-09-05 19:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 8964181c71dd4024cd9ba028bca7fa55 SHA-1: 8053ca9985899b528f7a1b0319be5a5680abbef4 SHA-256: f87e2709eafdc418fe6373b2337dec692fb97a33415af8a09a2447dd8b79ecb4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://krisoc.ru/uplcv?utm_term=subprime+crisis+2007+pdf PDF link annotation
    • http://puzynowska-kancelaria.com/userfiles/file/dopikisetubelupagajozo.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d6cb15ecb---xatuxuterubenaposemusuz.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/aff38d7e022d8d850f4ae78673024ee4/simeba.pdfIn PDF document text
    • http://hebammenglueck.de/ckfinder/userfiles/files/divijetuxedapologik.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/45432919168.pdfIn PDF document text
    • http://familiegravesen.dk/ckfinder/userfiles/files/wawojed.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/89992379190.pdfIn PDF document text
    • https://renesens21.com/ressources/upload/files/kuludefopunimow.pdfIn PDF document text
    • http://websteravelandscaping.com/editorData/file/katomivokatikotebafoboxox.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085edf8a7f12---zimem.pdfIn PDF document text
    • http://bomtvplus.com/data/board/file/20210609034530.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/10777576306.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c388da2a7---46902827601.pdfIn PDF document text
    • http://vakoplus.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/87500663501.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/bokosonuxupunegudatetole.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/bff81ae347393c70d5bbe63e17e1f6eb/21328264663.pdfIn PDF document text
    • http://teplospectr.ru/images/files/vigeb.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b1044367b---16913269900.pdfIn PDF document text
    • https://dodomacnosti.net/data/file/vefavesomenopukafokivebiv.pdfIn PDF document text
    • http://travellightnepal.com/userfiles/file/dusijolomojovoledimerem.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160960fa9270aa---81637748083.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/zolom.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_off0000d735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD735 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 17428 bytes
SHA-256: afb291e032d1f4c35c640a9b9746e8ee779ef76cc6e07c02a24864402c16f25a
font_02_sfnt_off00011c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C72 10856 bytes
SHA-256: 2c04c50b0df48c66c9aaea0494312ddbd379f6f1d1aed12ef0c531b5b86b911f