Malicious PDF — malware analysis report

Static analysis result for SHA-256 4781f4b41cb3e7e0…

MALICIOUS

PDF

268.8 KB Created: 2022-02-09 01:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 32ea2c57bcbb64c5fe93cc8f05f8c394 SHA-1: 0b1127564f88aa554b4bdc7ad2973b9b8d3065a0 SHA-256: 4781f4b41cb3e7e04707986597b985e9bd0d37a5b582a41d1867cf3bfc22ab53
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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://colod.co.za/XSRYdR1H?utm_term=miracles+by+walt+whitman+questions+and+answers PDF link annotation
    • http://alkanboya.com/files/file///46518806408.pdfIn PDF document text
    • http://www.cbs-emballages.com/upload/file/58175548917.pdfIn PDF document text
    • http://nakajima-ya.com/user_data/image/file/94715319576.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f15ee015d2e---90507271330.pdfIn PDF document text
    • https://cicimanis.com/contents/files/deribodejekufup.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/5567797614.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/99224916709.pdfIn PDF document text
    • http://bacvietexpress.com/upload/userfiles/files/38147058027.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/dakim.pdfIn PDF document text
    • https://aristi-trap.com/upload/users/files/9992665531.pdfIn PDF document text
    • http://albertopizzetti.it/userfiles/files/givudufigumudupedemu.pdfIn PDF document text
    • https://metal-et-verre.ch/ckfinder/userfiles/files/48558844830.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/42768256139.pdfIn PDF document text
    • http://dbexpertise.fr/catalogue_dynamique/file/19125937350.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/tegejavuwovetuzulu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d6e20c74c3c---17223476251.pdfIn PDF document text
    • http://mingzhicc.com/userfiles/files/naxebobofofofedelugaw.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/qcamo8ujt3sot78umuhibe96h0/tegukukikawukatofajexapap.pdfIn PDF document text
    • http://hud101.vn/webroot/img/posts/files/5980019131.pdfIn PDF document text
    • http://medica-brno.com/files/18762443602.pdfIn PDF document text
    • http://blackswaninfotech.com/kcfinder/upload/files/64988870949.pdfIn PDF document text
    • http://waheedullahauto.ae/admin/kcfinder/upload/files/12432539341.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_off0003bfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BFAE 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003d6ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D6CE 11212 bytes
SHA-256: 56c25a8d116445163881eee1a4ce9550a30daa5431644181ab80cecf21567dfa
font_02_sfnt_off0003f0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F0C1 19428 bytes
SHA-256: 903055dd13ff08ba27c788f6b02bf1247f04490058c51bd1c0ebd8e4a9037c7a