Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87fb9831d64a230…

MALICIOUS

PDF

551.0 KB Created: 2022-01-21 15:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 6f86df2cfa1c263e6ddc2ec3481f4a06 SHA-1: dbee0702057dba7bd74f20fe3649441db66e454d SHA-256: f87fb9831d64a230e4df4e49f0b9c8e7602cf0c57e1ddff86b98aa20e26b479d
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5345

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://tries.cz/media/images/upload/file/xafowemebazokavumazo.pdf In PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/ziperenebobaverigubow.pdfIn PDF document text
    • https://mu3yc792xh-rl1.com/contents/files/wekimod.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/losidez.pdfIn PDF document text
    • https://purevdavaa.mn/uploads/ckfinder/files/rigomuvelul.pdfIn PDF document text
    • http://laihoawedding.com/app/webroot/upload/files/62742126058.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/53537590177.pdfIn PDF document text
    • https://tims.ro/ckfinder/userfiles/files/vawajapag.pdfIn PDF document text
    • http://toyotarent.kr/FileData/ckfinder/files/20211014_FA4EDB5E11D819B3.pdfIn PDF document text
    • https://sapporomn.com/userfiles/files/14341692368.pdfIn PDF document text
    • https://actualite.autopromo.com/fckResources/file/42425212289.pdfIn PDF document text
    • https://osakaav.com/userfiles/files/89310099074.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616c77bb24bc1---16861111901.pdfIn PDF document text
    • http://www.portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/14444159279.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/13973739231.pdfIn PDF document text
    • https://timminsrenovations.ca/file/CEHXKzadIuHqYiWu.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/29992180872.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/tgwjJlsMqHc/uplcv?utm_term=morality+questions+and+answersPDF 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 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_off00082eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EB4 17832 bytes
SHA-256: 6f30bfcff94a58fe4ac86f3f2ab294f1c16cecb6db9978b041a064582a6c2045
font_01_sfnt_off00085d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D47 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000873eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873EB 10680 bytes
SHA-256: 465571c03dea859904694e2e01dccebd3f53baaad2565ab611f38f61339eb615