Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de9a8637261c7ae…

MALICIOUS

PDF

299.4 KB Created: 2022-02-27 02:17:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 025d75bf6b916aeaf139195ebb5bf0d9 SHA-1: 0d63b1ce063d9bdf43aad7b56c17f4c6d56c4687 SHA-256: 4de9a8637261c7ae14491d5e3d950a79b6d416983e7dc4ced46b4260d7b49634
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7195

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://wirut.co.za/XSRYdR1H?utm_term=crime+scene+report+form+pdf PDF link annotation
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16180e552aa85e---87506879704.pdfIn PDF document text
    • http://boracayg.com/FileData/ckfinder/files/20210718_2EEE7D6AB15E6546.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/162056bf49d07a---18856168201.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161354326e7c83---satotomijekosesuvebaxagi.pdfIn PDF document text
    • https://ssea2.deegbesprofessionalcare.nl/files/File/92921176435.pdfIn PDF document text
    • http://www.ezmoving.com/file/kesuv.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/56252368049.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/85e78fbae259722fc4d9a0ed146bceb4/moranevifivifi.pdfIn PDF document text
    • http://benetalent.com/upload/files/14052456178.pdfIn PDF document text
    • https://northwestconvention.cz/data/files/divilofitezata.pdfIn PDF document text
    • https://bselink.com/userfiles/file/sanorimobemej.pdfIn PDF document text
    • https://aradmissions.com/ci/userfiles/files/gubodefen.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/80636528884.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/wejutevulizozelobuweni.pdfIn PDF document text
    • http://uklearningnetwork.com/userfiles/file/15367794131.pdfIn PDF document text
    • https://umiyawoodworks.com/fckdb/userfiles/file/18606978105.pdfIn PDF document text
    • https://uangraja.com/contents/files/vimujexovipumutulokekozak.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/sesifepanezele.pdfIn PDF document text
    • https://cosmopolitanhotel.lastrada.bg/uploads/wysiwyg/files/88702917313.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202111171629112766.pdfIn PDF document text
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/51653197545.pdfIn PDF document text
    • http://shosholoza.de/file/zevekobofebevojikosa.pdfIn PDF document text
    • https://cityface.cz/res/file/fonopuxililiwa.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/74826735125.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/detan.pdfIn PDF document text
    • http://vibrator4you.cz/UserFiles/File/winujixomuvatof.pdfIn PDF document text
    • https://igk-lilienthal.de/downloads/14166894170.pdfIn PDF document text
    • http://c-six.it/userfiles/files/25466631206.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/64632604199.pdfIn PDF document text
    • http://adice-area.com/pictures/files/zofolak.pdfIn PDF document text
    • http://fuku-zou.com/userfiles/file/14831230206.pdfIn PDF document text
    • https://medcogulf.com/uploads/file/dufedoxivuwo.pdfIn PDF document text
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/purid.pdfIn PDF document text
    • http://ayurveda-shiatsu-nice.com/upload/files/1081458786.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16178e1ef5b9d0---xanigegubet.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_off00043f5b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00043f5b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F5B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00045676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45676 18060 bytes
SHA-256: 6f455bfc4bf286cd6f2f44302b960e6a65cb58374d9c87edf85658293935cbc2
font_02_sfnt_off000485a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x485A8 10604 bytes
SHA-256: 4a78e7f45ef0ebb228009c1521396ba8e8d9877ab61561c197c4b07fd02fca12