Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6421a7dcc7e8b6…

MALICIOUS

PDF

275.4 KB Created: 2021-12-17 23:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: d71824fc46c9f5c35353a48c0c845574 SHA-1: 0cafd8f5ab8d899aef4abf755140905013a24945 SHA-256: 2b6421a7dcc7e8b6eb4d6c2ebec2148a3d7729137e3ea43b5ce2fcb803b7c7d9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8988

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://queure.ru/uplcv?utm_term=how+many+calories+in+a+burger+king+original+chicken+sandwich+no+mayo PDF link annotation
    • http://watdoenwevandaag.nl/upload/20237840792.pdfIn PDF document text
    • http://presssimayeshahr.ir/pic/file/78117264888.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/64221182614.pdfIn PDF document text
    • https://healthlantern.com/ckeditor/ckfinder/userfiles/files/karaxu.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/26873789291.pdfIn PDF document text
    • http://cargologicru.com/sadm_files/zijolitas.pdfIn PDF document text
    • https://worldcastlive.com/userfiles/file/foxutonugoze.pdfIn PDF document text
    • https://dawnraytech.985.tw/data/file/userfiles/files/taribow.pdfIn PDF document text
    • http://krcatikyonetimi.com/userfiles/file/93415405871.pdfIn PDF document text
    • http://www.siscbolivia.com/admin/uploaded/fck/file/witidiseroj.pdfIn PDF document text
    • http://aurastaffing.es/upload/file/zavotuwit.pdfIn PDF document text
    • https://baatco.com/ckfinder/userfiles/files/66540798685.pdfIn PDF document text
    • http://ty-int.com/files/files/1122109620.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/duroboxelivokegase.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16133e6711d0e9---nivelutija.pdfIn PDF document text
    • http://artdental.hu/editor_up/16686143949.pdfIn PDF document text
    • http://elrey-uslugi.ru/media/file/fogazofim.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_off0003e011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E011 11240 bytes
SHA-256: 7ebf7635ad13b7b937350542740e54effa08b7114366601c7541b100a3fb2d1b
font_01_sfnt_off0003fa06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FA06 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000410a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x410A5 17684 bytes
SHA-256: b6885472775bd187f09a78df5e1d340ffdad8b7c6e19a5311d2a4e391aecdf0d

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