Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f7650cb0f72dfb…

MALICIOUS

PDF

351.9 KB Created: 2022-02-22 18:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 290a384a5b9e5552a714712c918266da SHA-1: 4def372144c929fb1e6a164d09a1d9640b4c0e05 SHA-256: a4f7650cb0f72dfbebaffcea6254c3374dd8f5d6f93a6401a23740ba76c9603d
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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=1978+prowler+camper+owners+manual PDF link annotation
    • https://fortworthdental.net/cmsCart/upload/file/litafiminikibegudeje.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/32030398112.pdfIn PDF document text
    • https://digireg.cz/upload/27420889578.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/zeserulomisadi.pdfIn PDF document text
    • http://etkindenetim.com/resimler/files/fuvawalumipomope.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/30229480397.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bee8ab7aca6---godenomibigo.pdfIn PDF document text
    • http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/dafase.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/3544800601.pdfIn PDF document text
    • http://ambulatorioveterinariocigliano.com/userfiles/files/tiriweso.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/29582358825.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///10852374792.pdfIn PDF document text
    • https://letajicikoberce.cz/userfiles/file/8590952380.pdfIn PDF document text
    • https://www.sophrologue-nimes.fr/upload/news/files/xazegumukalokavuma.pdfIn PDF document text
    • http://tattooindex.nl/images/uploads/punikig.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/norekepunafapuk.pdfIn PDF document text
    • http://www.ambatownship.com/ckfinder/userfiles/files/2029374593.pdfIn PDF document text
    • http://www.domplit2006.ru/ckfinder/userfiles/files/90173507992.pdfIn PDF document text
    • https://koratspring.com/upload/file/mevoz.pdfIn PDF document text
    • http://aimer.netdbhosting.com/file/66661997517.pdfIn PDF document text
    • http://bixenony.com/userfiles/files/mupaxik.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/161208324ef558---gizifawunato.pdfIn PDF document text
    • https://kristinanamaste.eu/files/47828197274.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/67612138614.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_off00050c4c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00050c4c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C4C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005236c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5236C 10912 bytes
SHA-256: f64a8cf5c128560ff5883e2d4617b644e9d0021c8097dc4c0fbde019ef2e02de
font_02_sfnt_off00053cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CD9 19220 bytes
SHA-256: e78fe8bc5bd92f56eace98825488a5c7c277156fecefcd486e607e8d9679e4aa