Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d597c8839f1830…

MALICIOUS

PDF

417.2 KB Created: 2022-02-08 03:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: a98dfd8fc6bb625c36935f6bc91fbc80 SHA-1: 0632dc34a2a56aebd1fbe9bef1a865f8fbf039b2 SHA-256: b5d597c8839f1830bb3ba2277d09d368623f57f6ee06f52867dff7790bafd6d8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5599

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=ontario+air+brake+manual+pdf PDF link annotation
    • http://be-now.pl/userfiles/file/62404611464.pdfIn PDF document text
    • http://zonwering-nederland.nl/ckfinder/userfiles/files/jisan.pdfIn PDF document text
    • https://mrpressconsulting.com/UserFiles/file/zoluselipidabaz.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/06380a65ad0514a1164d5155ce7f61d0/94691027551.pdfIn PDF document text
    • http://www.proektes.ru/kcfinder/upload/files/tawapizafejufad.pdfIn PDF document text
    • https://adikkeempat.com/contents/files/madolivolutekavudivano.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/a0fa3733805ae90339d87fe551d12fe8/19987869034.pdfIn PDF document text
    • http://satunatc.ac.th/ckfinder/userfiles/files/toruleloxu.pdfIn PDF document text
    • http://proclima-membranes.ru/userfiles/file/8638679066.pdfIn PDF document text
    • https://www.serwkom.pl/plugins/ckfinder/userfiles/files/vajod.pdfIn PDF document text
    • http://rracc.com/file_media/file_image/file/misazaxosuvetuk.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/76992983184.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/25471077416.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013/admin/ckfinder/userfiles/files/falewipakitenaxaxidopedid.pdfIn PDF document text
    • http://songpinhao.com/userfiles/files/20589632973.pdfIn PDF document text
    • https://patoman.ro/ckfinder/userfiles/files/bapijaluk.pdfIn PDF document text
    • http://dynamicyunnan.com/ckfinder/userfiles/files/rodisulomibujumobani.pdfIn PDF document text
    • http://armoire-atex.com/js/kcfinder/upload/files/vitirixatopa.pdfIn PDF document text
    • https://educhina.mn/editor/files/37348355223.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/66883311649.pdfIn PDF document text
    • https://ntm.mcapps3.cz/multimedia/file/kotapenabiwupabipewuv.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161fe6494a1931---8794145292.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/navefapawe.pdfIn PDF document text
    • http://uklearningnetwork.com/userfiles/file/31405217989.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614297bd98622---sufonamokajadevolajobova.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/161becf79df34a---52809144886.pdfIn PDF document text
    • http://cameralehiep.com/hinhanh_fckeditor/file/dabegupetifezilefere.pdfIn PDF document text
    • http://mastera-mix.ru/ckfinder/userfiles/files/1386876304.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/wamivebazi.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_off000617dd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000617dd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000617dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617DD 10848 bytes
SHA-256: f89318b5e2528c89264616c23469abfbc3ad6477399791153e98c2680aa90e82
font_01_sfnt_off000630a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630A9 17252 bytes
SHA-256: 4c143ace7aebf2888c16c6f1e84153d0f51afc4b92c8f338f37810ff07d075f0
font_02_sfnt_off00065d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D98 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9