Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8923c6410665e9…

MALICIOUS

PDF

271.7 KB Created: 2022-03-04 21:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 929bb1e72b7f88e9f7ca165e2e960a28 SHA-1: a1cb6bce7f8689b6e98fb03bf4320f603b4dca3c SHA-256: cb8923c6410665e9e165ae8e49d4729244bf0a50ebfb3612db68559abbb78883
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6946

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://pnl.ac.id/asset/kcfinder/upload/files/65267534870.pdf In PDF document text
    • http://yachtandgulet.com/userfiles/file/76865657050.pdfIn PDF document text
    • http://zgkimsteszew.pl/img/upload/files/24128429129.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16217f50769694---43528566759.pdfIn PDF document text
    • http://blue-balloon.pl/files/files/zolenopotewejikunajowene.pdfIn PDF document text
    • http://jian-yuan.com.tw/kcfinder/upload/files/patufiza.pdfIn PDF document text
    • https://en.unecol.com/uploads/kcfinder/upload/files/29602572244.pdfIn PDF document text
    • http://www.pibmg.com.br/ckfinder/userfiles/files/files/wufojonoraj.pdfIn PDF document text
    • http://timnhanhonline.vn/upload/files/xagareroregirategusiwa.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/palamumiforosutu.pdfIn PDF document text
    • http://skolka.pencin.cz/soubory/file/fasafiduxibofovajivovuju.pdfIn PDF document text
    • http://getdol.com/page_data/file/fetakufesokimabokuwewew.pdfIn PDF document text
    • http://www.barbantie.com.br/admin/plugins/ckeditor/kcfinder/upload/files/telesi.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/12437152404.pdfIn PDF document text
    • http://www.perlodrink.com/documents/nesidufavajawefure.pdfIn PDF document text
    • http://zanethompson.com/userfiles/file/79719432228.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/zavezofajogedidigumuwe.pdfIn PDF document text
    • http://xn--23-7lc6a.xn--p1ai/public/file/rusikago.pdfIn PDF document text
    • http://urotunisia.com/uploads/FCK_files/file/sowabokusuwizelipot.pdfIn PDF document text
    • http://sanraimundo.cl/dyn/uploads/file/zofora.pdfIn PDF document text
    • https://bandloc.com/FCKeditor/file/xidedadidotutejufule.pdfIn PDF document text
    • http://chongqinghaohong.com/upload/files/78963673138.pdfIn PDF document text
    • http://shtaket46.ru/page_edit/_samples/userfiles/files/nibexatemu.pdfIn PDF document text
    • http://gamax-motor.cz/data/dokumenty/bodag.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/lokugipum.pdfIn PDF document text
    • https://stl-log.com/htdocs/cljr/data/files/pexekibazebudoketenosig.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621b099b134ed---pefibasikubanepuxusuweras.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/1440042823.pdfIn PDF document text
    • https://www.v-investor.ru/kcfinder/upload/files/40124917662.pdfIn PDF document text
    • https://prcomponents.com/ckfinder/userfiles/files/38227790263.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=bhilai+power+house+weather+reportPDF link annotation
    • http://lamachine.nl/userfiles/file/fitarokafejaperejoru.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_off0003d1d1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003d1d1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D1D1 17024 bytes
SHA-256: 854eb85924c28e595e9cfc542f70f6a22fafa7ebbc77f508367c429cb9eea8f0
font_01_sfnt_off0003fe57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FE57 10484 bytes
SHA-256: 739d2c5bde0e3c9957f24bc2b6b6b4b3730ff21dd8aa7d18909fd022d53f526f
font_02_sfnt_off0004166b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4166B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9