Malicious PDF — malware analysis report

Static analysis result for SHA-256 258afc39668a9a09…

MALICIOUS

PDF

251.8 KB Created: 2022-03-06 14:24:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 7834fdd4ba308aae24db9680f1f8e80f SHA-1: b7097d9209713bc6afcf8b1814f72cf913c4c6eb SHA-256: 258afc39668a9a0962fec9780fe73a2a36c2b33eb6f201a9f8144ed17dc37dbf
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6914

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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://colod.co.za/XSRYdR1H?utm_term=altova+xmlspy+2015+enterprise+edition PDF link annotation
    • http://pzhjintai.com/upload/files/14544011947.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/tibinolixaredopob.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/50437080472.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/puzixomix.pdfIn PDF document text
    • http://coffeexclusive.co.uk/kcfinder/upload/files/betamikubuwaligakojuki.pdfIn PDF document text
    • https://chataigne-cevennes.fr/imgs/files/94171758968.pdfIn PDF document text
    • http://hmsendo.pl/uploads/editor/file/80266691705.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/piziroretekidefagi.pdfIn PDF document text
    • https://comobrew.illomoc.com/newsite/images/user_uploads/file/66461965940.pdfIn PDF document text
    • http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/41234577783.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620f8e83e1a7d---50688953076.pdfIn PDF document text
    • https://vatlieuxanh.vn/resources/uploads/files/zikojujenusilozoxodusage.pdfIn PDF document text
    • http://groupburuemas1.com/contents/files/vijejenixawubugagukiwulew.pdfIn PDF document text
    • https://munkenpo.or.jp/kcfinder/upload/files/wezixuva.pdfIn PDF document text
    • https://shiksha24.com/userfiles/files/jujupipolovosut.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/92107079406.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/sizuvenebelereg.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215c55229574---nigobowe.pdfIn PDF document text
    • http://speckrepeg.by/UserFiles/files/40849420205.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2022022307563879.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/ludowiwul.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/95029375913.pdfIn PDF document text
    • https://dol-rtknetwork.com/uploads/files/51526301913.pdfIn PDF document text
    • https://gloriamus.org/Uploads/userfiles/files/56822772532.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/162031c19c84a9---dogivosile.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/42323253547.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cb3b14eeac89d763644f599fe016628f/butotidu.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/162202234ac6d8---87457048943.pdfIn PDF document text
    • http://kcemsp.org/upload/editor/file/46730049283.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202203020802333942.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_off000381ee.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000381ee.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000381ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x381EE 16908 bytes
SHA-256: 38bac6cbbfaec3e56b13d736465da90033f44fbf6093b0971265751a0cd44094
font_01_sfnt_off0003ae0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE0F 11244 bytes
SHA-256: 3ae87e45d58a6c970461ec29e889daa6480c0e72668dd569c8b21117e311607f
font_02_sfnt_off0003c897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C897 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9