Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f77bbe48fa5fa2…

MALICIOUS

PDF

249.5 KB Created: 2022-02-02 23:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 58dc138f790abfbb0890dc875acba5eb SHA-1: 200478bcbe3d1286edbbba195fef0adae6ffaa85 SHA-256: a4f77bbe48fa5fa25d060b5d17e6a2aa84849992c7fd267e76259ab03eaa4a23
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7877

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://lovig.co.za/XSRYdR1H?utm_term=bwakila+video+clips PDF link annotation
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/n93r88jvndcmfacibbrbt2h763/63286202405.pdfIn PDF document text
    • https://chupwo.com/editor_upload/file/xobev.pdfIn PDF document text
    • http://phelieuviethung.vn/upload/files/15888564520.pdfIn PDF document text
    • https://alarouba.com/ckfinder/userfiles/files/wanezemesaguwut.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/wufumebaxogup.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16130461a05324---busizi.pdfIn PDF document text
    • http://chipgene.com/image/files/20210703_115321.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/wadolesebuxusoren.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161426cf8beee9---robuvegujulepuzog.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/b63f36e591ff5ff95bff4fd97c6c9a13/gevinerusagomifodese.pdfIn PDF document text
    • https://fcksa.com/ckfinder/userfiles/files/zafasatafizifegepixo.pdfIn PDF document text
    • http://jonme.net/ckupload/files/25704845589.pdfIn PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/17357225077.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/8629833924.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d593281225b---popopepurilix.pdfIn PDF document text
    • http://focostrade.com/files/20210701185138.pdfIn PDF document text
    • https://birotex.rs/images/files/15581690914.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126408e64338---ginaxuk.pdfIn PDF document text
    • http://location-venise.com/italie_documents/files/pitazusubevenamatago.pdfIn PDF document text
    • http://southerncross-ex.com/images/blog/file/59622571727.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/palifamoloz.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/kolevolewabebafetuzowow.pdfIn PDF document text
    • http://studioingtassinari.eu/userfiles/files/zepisipogoluzodebopoxe.pdfIn PDF document text
    • https://thehideawayresortpattaya.com/userfiles/files/vazotasufevenejov.pdfIn PDF document text
    • http://lammensfilip.be/uploads/files/patomixani.pdfIn PDF document text
    • http://1088.net.vn/userfiles/file/lawakinuj.pdfIn PDF document text
    • https://neelamihouse.com/userfiles/file/lipagomizuruzara.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 extracted file (font_00_sfnt_off00037c5d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00037c5d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37C5D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00039378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39378 16396 bytes
SHA-256: 6b2314a69e7c4eca3fdfaea7b39b7e89cb9610f846dec641c25ad481cbe15280
font_02_sfnt_off0003bde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BDE0 10500 bytes
SHA-256: a0b1af1955f83cf8e3377e06170e079c9daea1b6238967c0e9fb539d1b0d2f03