Malicious PDF — malware analysis report

Static analysis result for SHA-256 441e40013c6c7f64…

MALICIOUS

PDF

237.1 KB Created: 2022-03-19 13:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: b938d9dc03090db7cd628892b962d5c8 SHA-1: ce396f70b69bbb43cef085bf40e9c6b3dfeb5aa6 SHA-256: 441e40013c6c7f6414b0ffc8bc5afb7be71211742eb2a2e843d7783afc38ec6c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7758

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://podar.co.za/XSRYdR1H?utm_term=update+software+android+data+hilang PDF link annotation
    • http://saeronbio.com/userData/board/file/68545055692.pdfIn PDF document text
    • http://studiolauramoschini.it/userfiles/files/fonizisobasa.pdfIn PDF document text
    • https://posetili.ru/userfiles/file/422651858.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/riniwinijok.pdfIn PDF document text
    • http://martonfogtechnika.hu/admin/kcfinder/upload/files/34104198048.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media/pubadaganeribudoku.pdfIn PDF document text
    • http://doicoffee.co.jp/js/kcfinder/upload/files/53308910096.pdfIn PDF document text
    • http://countryclaim.cz/userfiles/file/wazupo.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/161faa2e504ba6---zemukubusetifep.pdfIn PDF document text
    • http://faespi.com.br/kcfinder/upload/files/vesofoponuf.pdfIn PDF document text
    • http://simpelms.nl/userfiles/files/guzofisatevije.pdfIn PDF document text
    • http://hoangminhsaigon.vn/@dmin/js/ckfinder/userfiles/files/niwamutaviwudubejopo.pdfIn PDF document text
    • http://microsolder.hu/userfiles/files/19323008567.pdfIn PDF document text
    • http://intelibud.net/media/files_manager/files/sisediloxokalafawalokij.pdfIn PDF document text
    • https://izyskately.ru/foto/ck/files/bugijinuzejanisesas.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe221b72c03---91568838671.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/82621706440.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1622bbe0fd25d7---wavapodisun.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/1065082586621045fd9b01f.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/fgmmedu86gdum6vlmso6h2thha/80826049447.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1623575f9473a0---zesoresufovelef.pdfIn PDF document text
    • http://csc-vietnam.vn/uploads/userfiles/file/56779069349.pdfIn PDF document text
    • https://olafree.gr/admin/images/fatamufubu.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/jikotidilaruzam.pdfIn PDF document text
    • http://overnachteninorvelte.nl/bestanden/files/vapenoxotuguxovebufo.pdfIn PDF document text
    • https://marketlayer.com/assets/kcfinder/upload/files/sememubux.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_off00034571.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00034571.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34571 18368 bytes
SHA-256: c3944df39855ae3ee854e6d8e397d279a6a13bd0aafbaa89d80bd16e6550f1b4
font_01_sfnt_off00037560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37560 10872 bytes
SHA-256: 1b011c41437483cb19931d413799e5ad03e2a611f731b97f1843c7061e1def9d
font_02_sfnt_off00038e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38E4C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9