Malicious PDF — malware analysis report

Static analysis result for SHA-256 de440eb23dc577d0…

MALICIOUS

PDF

296.4 KB Created: 2022-03-05 00:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: f220416371abb0e4d0d0a5506ed31056 SHA-1: a5924116e501aa4dd003da97f1e7c21dff66df5d SHA-256: de440eb23dc577d0706dc58a404cfd5bf576add543b4854b31cda32b4aeec11d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6261

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://schelbiradio.ch/uploads/files/melivalogewa.pdf In PDF document text
    • http://iba.education/kcfinder/upload/files/4026494359.pdfIn PDF document text
    • http://www.ppspr.org.br/ckeditor/kcfinder/upload/files/donetuvu.pdfIn PDF document text
    • http://redeyeldn.com/userfiles/file/gonurujew.pdfIn PDF document text
    • https://anpheatingandac.net/nbloom/fckuploads/file/pogegogegiloxesokirokij.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/98380621289.pdfIn PDF document text
    • http://vers-ma.de/userfiles/file/4862770607.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/71551160950.pdfIn PDF document text
    • http://dimensioninteractive.com/WYSIWYGImage/file/25801781174.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/60651902ff0e087f12f61cdc92d034aa/wamokab.pdfIn PDF document text
    • http://eblast.stationhub.com/Upload/file/retodepusedumex.pdfIn PDF document text
    • http://permagnet.com/upload_files/file/2203050632318374864h3vwt.pdfIn PDF document text
    • http://promerilaclama.com.tr/panel/kcfinder/upload/files/porasozixer.pdfIn PDF document text
    • http://waypl.pl/upload/File/valumawipavirexejubarug.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/161fb7108bdfba---91284344880.pdfIn PDF document text
    • http://azinsaghf.com/cache/fck_files/file/40004907388.pdfIn PDF document text
    • https://potentialdesign.cn/userfiles/file/1644456924.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/fokakowimenavud.pdfIn PDF document text
    • http://thespaceproduction.com/admin/userfiles/file/noxilufib.pdfIn PDF document text
    • http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/4378421050.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/43168105809.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/38593848150.pdfIn PDF document text
    • https://full-flavors.com/img/Data/file/loboxojotaguda.pdfIn PDF document text
    • https://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/93718886345.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/wewofutugara.pdfIn PDF document text
    • https://dcimx.com/files/72941594958.pdfIn PDF document text
    • https://kanalprofi.at/UserFiles/file/puwasag.pdfIn PDF document text
    • http://sv-orhidea.ru/upload/files/63881103926.pdfIn PDF document text
    • http://abb-impuls.su/kcfinder/upload/files/31967805319.pdfIn PDF document text
    • https://xtremefitksa.xbodyksa.com/ckfinder/userfiles/files/1148841016.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=exclusive+distribution+agreement+template+south+africaPDF 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 extracted file (font_00_sfnt_off00042d2b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00042d2b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42D2B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00044446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44446 18728 bytes
SHA-256: c57e9c0364be14b482d86ccba7bbfedaf38b0820b74864ddfa9b562954c3a928
font_02_sfnt_off0004759f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4759F 11456 bytes
SHA-256: e69c0acff29f8b41811f737e8ed81ee14f0fac90c6e62531db0d6faa6282d197