Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8efad04bd2f599…

MALICIOUS

PDF

85.0 KB Created: 2021-06-12 09:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: e967ad3946a1983fcf13097c8bd89945 SHA-1: e614278500e7d9b8c7fe522a8caa6b0a691e2495 SHA-256: 5d8efad04bd2f59934c64002ef785ffa0977e5c9c84757065cc1f4b85d06b253
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://pistant.ru/uplcv?utm_term=the+dark+knight+returns+part PDF link annotation
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/5ee1106c64f39a7163c85fba794875fc/75392247817.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/25979029530.pdfIn PDF document text
    • http://sage-chem.com/image/files/20210609_043057.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/54954661541.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/91tmbnr31qgiqh1cabq268eag6/botupo.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a92667b21da---rusugifukunina.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/c15d9f01ead8ab09b7c7c8c0160c832d/tepinajuzutorenan.pdfIn PDF document text
    • http://norilskgu.ru/userfiles/file/33364697004.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/61tjke8ktfsbnabbua48lssu4e/xodununexati.pdfIn PDF document text
    • https://sy-tech.eu/file/piwugifaleb.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/d2c2b61bad2d92d460e48d6620cee824/gimolepadi.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/c77e3a820efb46079f120d3ee6421396/kozunilinorivusewiwoji.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/79548174885.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b206f28531a---20407320624.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/29643725652.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/d7n4sg72qjdh5rn5uh55t2tb5t/lataduxa.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/pabui3ah8jgcei97tbm5tds744/sufelotozikanogepupabi.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160880440e944b---43521217517.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/969af3d0a52ecec15aeb7309c66e7087/71087325556.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E20 5204 bytes
SHA-256: e3755ba11b621d6b0af97f46d0ecde490ff9e2f98e6630fd3b2f9bb0f1a19076
font_01_sfnt_off00011fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FCE 11444 bytes
SHA-256: 46c3f2945145e98b956d3a3a7da6c9c82f343852ea3b857ac8192541baf5ceb7

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