Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddfd21925377241…

MALICIOUS

PDF

92.8 KB Created: 2021-08-01 13:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: cdbbb0d1c303891f044216c2f1f40242 SHA-1: 82db9d6f972dd13eb10ed98c78b62d162bc14ddf SHA-256: 3ddfd2192537724114231d4eb96f8e20363e4ff66e6716a93a041f0b429809f3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://synerhu.ru/uplcv?utm_term=paginas+para+bajar+peliculas+utorrent+en+espa%C3%B1ol PDF link annotation
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cac22e96050---pulumimiwejikinigitixak.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160adc4aa56ee9---zakid.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/mlp557nmio36ekutm5s7ushjg4/40531532751.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/79280529244.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/16307680904.pdfIn PDF document text
    • http://niengrangchuyensau.com/upload/contentFile/file/94558235635.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/fdin556pfe94r72salh945hc9u/vevizizisuxipa.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/45624970364.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c2be2005cfc---belitudakudodeverog.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/jng34b3g07fgt7ii62le3nfh33/korugero.pdfIn PDF document text
    • http://zuche0551.com/upload/file/mozuxuseresazififazosir.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/l8og61ers241fubdh0fs97jnh4/komaxadoma.pdfIn PDF document text
    • https://nazragame.com/calisma2/files/uploads/97234933922.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/temizir.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade7e90e11e---nunojitat.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/99688723579.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8706a79c7---94198329772.pdfIn PDF document text
    • http://asahiru-ban.com/files/files/77776411345.pdfIn PDF document text
    • http://astorandblack.net/emailer/userfiles/file/nivinapesasasit.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zijaga.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/xonutibidupuborivir.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/02c51ffc8643606820c2a0f7c63958a7/kejomokozatasona.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607911052b57e---7690179335.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB38 17896 bytes
SHA-256: 53be930afc5caa2c9e682cbdcd173d863c1f98ae8986894a1d1d4525eff3c042
font_01_sfnt_off000118db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DB 11124 bytes
SHA-256: ea119668904242fbef29f6c250f6b988e8d0f1144722f7861b37f8141afd5161
font_02_sfnt_off00013272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13272 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A83 16864 bytes
SHA-256: 4f4adb330f64a146ea435c4c7ce8bf224ba0ec0c142b1e97123dd5552ebc7ad1