Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78a99f2ebd8fb90…

MALICIOUS

PDF

296.9 KB Created: 2022-05-15 07:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-16
MD5: 4b2949c987c899d8eccf6a953b7709f4 SHA-1: 1730057978b71c3a5fd5e279fdfcf40e22a76d28 SHA-256: e78a99f2ebd8fb90defd3ec1024589ec68714545af9abeb5532710546daff49f
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6835

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://xn--4k0b43gkwo4gn.com/upload/editor/file/vizafobukej.pdf In PDF document text
    • http://serdceprirody.ru/userfiles/file/63036853971.pdfIn PDF document text
    • http://turnkeyparts.com/site-uploads/25163404004.pdfIn PDF document text
    • https://poruramilisase.weebly.com/uploads/1/4/1/5/141559972/gotogobijita.pdfIn PDF document text
    • https://portalspam.media-informatika-mura.com/assets/kcfinder/upload/files/tabejaseradovokapole.pdfIn PDF document text
    • https://fopimakalegej.weebly.com/uploads/1/3/0/7/130738542/biwojorakuza.pdfIn PDF document text
    • http://ranch.pl/files/file/65628129181.pdfIn PDF document text
    • http://ekoturizm.mekan360.com/UserFiles/file/lalozipin.pdfIn PDF document text
    • https://antiquites-opio.com/kcfinder/upload/files/bafivevetago.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/82345657492.pdfIn PDF document text
    • http://www.southpointinstitutehowrah.com/admin/uploads/file/luxekejefododumura.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/fozor.pdfIn PDF document text
    • https://invision.buzyhub.com/files/tajutejusarafome.pdfIn PDF document text
    • https://b2b-intelligence.it/uploads/file/19294291378.pdfIn PDF document text
    • http://rollaktif.com/images_upload/files/69456253357.pdfIn PDF document text
    • http://cadex-forensique.ch/app/webroot/kcfinder/upload/files/79955463324.pdfIn PDF document text
    • http://globalbizkorea.com/userData/board/file/runukabipoxegokedorezonu.pdfIn PDF document text
    • https://dacola.com/upload/files/gemesisaropununewusi.pdfIn PDF document text
    • http://osmed.cz/app/webroot/files/files/18876950572.pdfIn PDF document text
    • https://diwamelebo.weebly.com/uploads/1/3/4/1/134108813/259f2996.pdfIn PDF document text
    • https://jisezetole.weebly.com/uploads/1/4/1/3/141329344/nixerij-ruboretazeru.pdfIn PDF document text
    • http://denizyemek.com/images/fck_upload/file/winadevu.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/67267664392.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/162208293b3123---44707952077.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/l8d1utn98vhvv4gb8fqi1b6fa6/65691629103.pdfIn PDF document text
    • https://www.studioline.ie/ckfinder/userfiles/files/6153125672.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=list+of+three+letter+words+in+english+pdf+printable+free+pdf+downloadPDF link annotation
    • http://www.cst.rnu.tn/js/ckfinder/userfiles/files/18540919548.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_off00042fce.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00042fce.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42FCE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000447e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x447E5 10960 bytes
SHA-256: 5f23b2ab14d1edc4a9fad2448b3ac1aca8045b4c4f74e0eca6cb9857e97442f7
font_02_sfnt_off000460e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x460E1 18784 bytes
SHA-256: f02ff473a01f0fbb1416b3edfd1e47aa17e7b959bfcb6ff7c8d9f15112ccb934