Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b89634b287a167…

MALICIOUS

PDF

328.0 KB Created: 2022-03-16 04:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 7c91f89e5072253d1852aee5b1481c2e SHA-1: bcb909baa51af7a2b581a13e3573f7e0194823e2 SHA-256: a8b89634b287a16731eb1d0c6d8106565ee5f5a02640b3db78ab369d24be6080
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

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://scalper.ir/data/files/file/56519945748.pdf In PDF document text
    • http://bf4.nim.ru/userfiles/files/tajalekog.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/lenakironuz.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/42099013750.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1622f1adb1d3d9---deranosit.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9ca4de9812---jebev.pdfIn PDF document text
    • http://de-ko-gmbh.com/ckfinder/userfiles/files/34048888970.pdfIn PDF document text
    • http://iks.premoweb2.at/userfiles/file/35895370863.pdfIn PDF document text
    • http://flexibordj.com/app/webroot/js/kcfinder/upload/files/94203956102.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/63058867412.pdfIn PDF document text
    • https://averakazan.ru/kcfinder/upload/files/58722571137.pdfIn PDF document text
    • https://vajdasaraegyesulet.hu/kcfinder/upload/files/mepujakodelefikidimag.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fdb7acadc20---fevewavevavenaj.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/64252425950.pdfIn PDF document text
    • http://poliman.srv.br/assets/kcfinder/upload/files/65096212550.pdfIn PDF document text
    • https://pacpartner.net/images_client/imagesfile/nisixuvo.pdfIn PDF document text
    • http://net-work.cz/data/file/fajawobalagigikawodoj.pdfIn PDF document text
    • http://sv-orhidea.ru/upload/files/10924670950.pdfIn PDF document text
    • http://www.donkersmontage.nl/kcfinder/upload/files/garuve.pdfIn PDF document text
    • http://alphamarino.kz/images/news/file/dozowavubijuvovatun.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/71346476755.pdfIn PDF document text
    • http://www.kermaz.fr/js/kcfinder/upload/files/39649691650.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/55252521758.pdfIn PDF document text
    • https://moruslondinium.org/img/files/47609725225.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=booklet+template+photoshopPDF 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_off0004aff3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004aff3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004aff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFF3 10364 bytes
SHA-256: d15d9b7903bd3a5383c4b610b1c896a86937ba017dc5909ab3a5ca235f9945b6
font_01_sfnt_off0004c775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C775 19004 bytes
SHA-256: ed3c300fd68e46a3c8f81be40c06851b7f02c817f50c2b19fb96279b95dc8d0c
font_02_sfnt_off0004f9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9BD 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9