Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f31e409df7cc89c…

MALICIOUS

PDF

216.3 KB Created: 2022-02-26 02:22:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 92f1cc99c665243d6fc96fef58d1464c SHA-1: 1f991f644a90bc1ea11586becbb0f1a06006a81e SHA-256: 5f31e409df7cc89ce4360e100964d7ff0e4fc8de7ea652022c4ea2f6c98a5a24
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8065

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://ilonew.tasksplan.com/userfiles/files/dekukubiwarowojup.pdf In PDF document text
    • http://studiobonvino.com/userfiles/files/puteragemozutodefutati.pdfIn PDF document text
    • http://kowalstwwo.pl/public/cms/images/file/82378343870.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619fe70a9df8e---68094313715.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///23503399060.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/23729602362.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/22537248462.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/sebowugemonajojuxedexikox.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161c0e4426134a---70127792810.pdfIn PDF document text
    • https://music-group-store.com/upload/files/44803275770.pdfIn PDF document text
    • http://cassotech.nl/site/data/ws/files/39395001411.pdfIn PDF document text
    • http://coyada.com/up_images/up_images/tivod.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/nedubodipupaxevane.pdfIn PDF document text
    • http://fine-trading-knotwork.de/uploads/media/kakadelipo.pdfIn PDF document text
    • http://xn----dtbhwhggdaoqfh3d.xn--p1ai/media/file/mipakojapeboxo.pdfIn PDF document text
    • http://jesupraguefilm.cz/pic/files/vivewaxefofafederurapum.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a1b03b1b52d---46549943785.pdfIn PDF document text
    • http://nairmobilya.com/userfiles/file/32474061535.pdfIn PDF document text
    • http://compsult.net/userfiles/file/94157858562.pdfIn PDF document text
    • http://www.kirmatas.org.tr/kcfinder/upload/files/64718815599.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/f8c1265f462e4490ad6e6a7a9955c3af/84124528397.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/nawomozudavifuzisakivub.pdfIn PDF document text
    • https://tch.lu/files/files/15806339910.pdfIn PDF document text
    • http://matrix-work.com/uploads/files/62247538797.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16133bea1e2670---60045340764.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/legejufafawuxamovi.pdfIn PDF document text
    • http://www.aqua-systems.com.tw/ckeditor/kcfinder/upload/files/vimudeseja.pdfIn PDF document text
    • https://robvandamfoto.nl/UserFiles/files/57185065959.pdfIn PDF document text
    • https://marathonroller.com/userfiles/files/rolik.pdfIn PDF document text
    • http://uteambio.com/upload/files/8124691268.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=string+format+java+curly+bracesPDF 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 extracted file (font_00_sfnt_off0002ecc8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002ecc8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002ecc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECC8 11304 bytes
SHA-256: 7e8d20137b3386f8a5f35cdda3e2513401585c89a805caca154093d6ea7c73e8
font_01_sfnt_off0003075b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3075B 19680 bytes
SHA-256: ac407ddc1c45ef5127ffd8a5fcb9a639ccb61a8417344bccb8576eaf0b474712
font_02_sfnt_off00033ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AD6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9