Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af443b520fbd184…

MALICIOUS

PDF

246.4 KB Created: 2022-02-06 11:18:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 932d4114766810068dca9a35961bacec SHA-1: 5342a9435ea25ab723db728ecb2378d0b5de064f SHA-256: 4af443b520fbd1842dda23f8fbc4be419033e32e313eecfea26b35c70e967874
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8399

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://tevav.co.za/XSRYdR1H?utm_term=letterhead+heading+template PDF link annotation
    • http://kimhoatra.vn/upload/fckimagesfile/96367644514.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/29850859168.pdfIn PDF document text
    • http://chestheart.org/assets/ckeditor/kcfinder/upload/files/21068505380.pdfIn PDF document text
    • http://barrospizzadb.com/uploads/files/zunexofamejawusaz.pdfIn PDF document text
    • http://rayanchem.com/d/files/69481374352.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/lufanulatu.pdfIn PDF document text
    • https://wasael.com/userfiles/file/danawagebizenura.pdfIn PDF document text
    • http://carnow.jp/js/upload/files/75664521314.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/xixagikujusiwojibudez.pdfIn PDF document text
    • http://nandishoverseas.com/UserFiles/File/23815430032.pdfIn PDF document text
    • https://interface-graphique.com/upload/editor/file/votukufuwijawor.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/2cbe2952dfcb4b1b23f39ba87e5c5511/70421958526.pdfIn PDF document text
    • https://tradingcall.in/ckfinder/userfiles/files/42141411240.pdfIn PDF document text
    • http://netpart.hu/kcfinder/upload/files/80135929781.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/dunofodikakikufet.pdfIn PDF document text
    • http://salman-is.com/userfiles/file/22926493623.pdfIn PDF document text
    • https://beehaviour.nl/userfiles/file/vawozuzejanagoz.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/161f4858ba32aa---63135643205.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/l5l3n6fjfk9ndbukst7vbb6ie0/39839059602.pdfIn PDF document text
    • https://anaksemut.com/contents//files/19522929698.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/metiveripanagij.pdfIn PDF document text
    • http://bienbao.org/uploads/files/57451473253.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/cd78b7c953974b4c399378f70ff31985/82647737086.pdfIn PDF document text
    • http://adm-zhemtala.ru/files/files/11498615231.pdfIn PDF document text
    • http://netmutum.com/userfiles/file/92747171203.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_off00036ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36CA0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000383bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x383BB 17608 bytes
SHA-256: 2779e93d026128a344a558495780c95016db9b91a79914431b77726383857347
font_02_sfnt_off0003b1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B1CF 10508 bytes
SHA-256: 7f9f6279ed30e39ad7a121ace8fa1e6532668492a0835be2018ab58e1c39cb13