Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87b51d54be3842f…

MALICIOUS

PDF

78.3 KB Created: 2022-04-02 17:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: c4402bea68b8814196506dc9ef7ca693 SHA-1: df3aef62fc80c82a21b1a666a5a4433ecf06f83e SHA-256: f87b51d54be3842f6623c0dd3aa45592f4d23276575a1f41d165e8bd2748eb0a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/YmrXLWy8?keyword=put%20first%20things%20first%20examples PDF link annotation
    • https://adilakaryakitnakliyat.com/kcfinder/upload/files/13289077994.pdfIn PDF document text
    • https://wufevepawupaxit.weebly.com/uploads/1/3/5/3/135391440/9782107.pdfIn PDF document text
    • https://www.profiexpo.ru/js/kcfinder/upload/files/46108180769.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/xosadeledozaneniper.pdfIn PDF document text
    • http://jj-metals.com/userfiles/file/2022040111441273499.pdfIn PDF document text
    • https://nezemugobif.weebly.com/uploads/1/3/4/5/134519414/6125258.pdfIn PDF document text
    • http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/kirorixaviwa.pdfIn PDF document text
    • https://benaputilog.weebly.com/uploads/1/3/4/7/134707665/396807fa5f.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/46332629775.pdfIn PDF document text
    • http://hanart21.com/files/userfiles/file/guxutak.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/127318612.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/92902fd8a55f72590c749b9dfc8ee9d8/28077290895.pdfIn PDF document text
    • https://nowawizerazez.weebly.com/uploads/1/3/4/5/134519823/4f17b8dc1.pdfIn PDF document text
    • https://pudomawiwo.weebly.com/uploads/1/3/5/9/135958378/92c0590cbda04.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/17146074917.pdfIn PDF document text
    • https://javedipigusoxi.weebly.com/uploads/1/4/1/2/141279155/dffcb9c7295f.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/65627033003.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/13532385826.pdfIn PDF document text
    • https://muwalarole.weebly.com/uploads/1/3/5/9/135959937/numetivodu.pdfIn PDF document text
    • https://wofimokenodifi.weebly.com/uploads/1/3/5/3/135331476/bopot-xonulotexaxinuz.pdfIn PDF document text
    • http://formanwoman.ru/userfiles/files/kowajupawelojof.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_off0000cce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FF 10888 bytes
SHA-256: 428b0095f002c74f66e9a1a97b743388b677469d63ec0bcca30e7c6beb9dc473
font_02_sfnt_off0000fdfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFE 16836 bytes
SHA-256: e439133077afdd362c41e6f656f49a01d2ddc47b188172fbffa0d235fbea14b5

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