Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fb637c7c1881a5…

MALICIOUS

PDF

359.8 KB Created: 2022-03-20 18:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: 17b1f81e888e41c8bf1e6ce504fedd4c SHA-1: 7f55cdaf943891d65244ce6727ef7f7ba7819947 SHA-256: 98fb637c7c1881a5ca5369fe8cc123df76791ff23d6edf30b18e25864e24b48c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6641

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://tevav.co.za/XSRYdR1H?utm_term=introductory+statistics+homework+answers PDF link annotation
    • https://xn--80aab4aif1bzi.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/nujigofataxu.pdfIn PDF document text
    • http://rediscover.today/databank/files/lupuwurubuvibojapilupo.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/dilv09om4oke4kipcomonuqlfv/bujapagekenomawevavex.pdfIn PDF document text
    • http://glassinter.de/kcfinder/upload/upload/16024545895.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/2022391937567554.pdfIn PDF document text
    • http://offerparts.com/upload/files/wazeb.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/nusejebegubigewanitida.pdfIn PDF document text
    • http://trailerdepot.ca/site-uploads/5276077129.pdfIn PDF document text
    • https://menokatea.in/ckfinder/userfiles/files/94345905472.pdfIn PDF document text
    • https://polaria.cz/images/file/82036681420.pdfIn PDF document text
    • https://www.cbrn.tj/nrsa_system/ckeditor/kcfinder/upload/files/98385318437.pdfIn PDF document text
    • https://xtremefitksa.xbodyksa.com/ckfinder/userfiles/files/68012924616.pdfIn PDF document text
    • http://tvojashkola.ru/img/upload/files/mifadunurigilo.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/ee117932febbf4925c8054fc99528204/jadozevivarubikobitu.pdfIn PDF document text
    • http://montpellier-businessplan.fr/mbp/upload/images/images/upload/ckfinder/67564216321.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/162295c1e423cd---14884954927.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/25804869283.pdfIn PDF document text
    • http://mitroc.com/userfiles/file/finarusefozesatelenuvevog.pdfIn PDF document text
    • http://sherry-japan.com/uploads/files/borevuwebaputa.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16209fe345bfb7---13291619445.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/fugixege.pdfIn PDF document text
    • https://artgallery.devctn.com/ckfinder/userfiles/files/52772603438.pdfIn PDF document text
    • http://liveranigioielli.it/userfiles/files/15806847727.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16211327c152b8---25318783381.pdfIn PDF document text
    • https://krishnapumps.com/userfiles/file/51321325004.pdfIn PDF document text
    • https://njshore.drinkpoint.com/uploads/files/67928006705.pdfIn PDF document text
    • https://demo.wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/wojikuradepujenikatil.pdfIn PDF document text
    • https://leeleather.net/userfiles/file/vifaxipebuduzeta.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/26965536628.pdfIn PDF document text
    • http://kbchina.de/upload/24639144093.pdfIn PDF document text
    • https://atarentacarburdur.com/userfiles/file/tujeximubudez.pdfIn PDF document text
    • http://gyuco.com/uploadfile/files/20220316_120700.pdfIn PDF document text
    • https://leo.tw/upload/ckeditor/files/6373415423.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_off00052cf4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052cf4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52CF4 10932 bytes
SHA-256: c26664024db5040824eea051601f65557ac17d880d8c2b0b795760f0477df259
font_01_sfnt_off00054634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54634 19492 bytes
SHA-256: d9457f3dbfc924cafa09412a68bb2ca6332f7d74181968ee3ed92bf7bfe98e27
font_02_sfnt_off000579a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579A7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9