Malicious PDF — malware analysis report

Static analysis result for SHA-256 4784efc9aa23e386…

MALICIOUS

PDF

260.2 KB Created: 2022-01-12 13:31:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 1fefcd3d9e8676fbe36e5a423a90ea59 SHA-1: c934c9a7e35a5923911d7aa2d0688eff275b11d1 SHA-256: 4784efc9aa23e3868c6a14440f82cd137b7fb19cb85b20f1d875abbe9ae4da37
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

Heuristics 5

  • 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.
  • 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://crewmak.ru/uplcv?utm_term=arerey+manasa+ringtone+free PDF link annotation
    • http://jfe.hk/userfiles/pupezomuwibag.pdfIn PDF document text
    • http://satcomlink.com/userData/board/file/nokatuvigu.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/murase.pdfIn PDF document text
    • http://cyuanmei.com/userfiles/file/38961039161.pdfIn PDF document text
    • http://basic-55.su/kcfinder/upload/files/4548598370.pdfIn PDF document text
    • https://yk-tech.com.tw/ckfinder/uploads/ckfiles/files/karunojesa.pdfIn PDF document text
    • https://hinodecoder.com/userfiles/file/revevigewus.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/79166413839.pdfIn PDF document text
    • http://vpsystem.com/files/fck/63852690709.pdfIn PDF document text
    • https://almuhja.ps/ckfinder/userfiles/files/32610357009.pdfIn PDF document text
    • http://www.tahi.hu/ckfinder/userfiles/files/40135232889.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161933f986b414---gikegebuguvudo.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/94010573235.pdfIn PDF document text
    • http://adamstore.medianet-shop.de/userfiles/editor_files/file/89481797633.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/36577570857.pdfIn PDF document text
    • http://podlahyadvere.sk/editor_uploads/system/files/zaxujemepexovegasomakod.pdfIn PDF document text
    • http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/36917896696.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/bitevedize.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/11283584973.pdfIn PDF document text
    • https://nyesigiso-mali.org/userfiles/file/5130989984.pdfIn PDF document text
    • http://schneider-glossa.ru/kcfinder/upload/files/fibogogatibezetezenim.pdfIn PDF document text
    • http://szentdorottyapatika.hu/files/bejawimevudoduzifur.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/nuluwidobujoraremedidi.pdfIn PDF document text
    • http://itps-group.com/uploadfiles/file/28609060589.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_off0003a959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A959 15868 bytes
SHA-256: 1ee4031d692c3a9b7b89fe99053984b0854017468abb6b5453b1c3fe83f4961c
font_01_sfnt_off0003d283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D283 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0003e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E927 10604 bytes
SHA-256: 52127b01711af5b1c1fe10138d0718ea7e48e89f857ed43382b7636d5f73415b

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