Malicious PDF — malware analysis report

Static analysis result for SHA-256 445543f30f777d79…

MALICIOUS

PDF

75.2 KB Created: 2021-09-12 12:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: c9a062af0ff9565ccb477d83ca563a7b SHA-1: 09e5557b78240c330a5d023a0d11d87ee750717d SHA-256: 445543f30f777d79a502c90466771e1b4f83e8339e1c96707e9e9e6837b1f504
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://ineke-ott.nl/keramiek-beelden-imagesfile/24299104299.pdf In PDF document text
    • https://xosobacninh.vn/webroot/img/files/90569489373.pdfIn PDF document text
    • https://kaparatt.com/images/File/33920975973.pdfIn PDF document text
    • http://ntweac.edu.hk/admin/ckfinder/userfiles/files/1881370186.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/34130553883.pdfIn PDF document text
    • http://ninda.vn/userfiles/files/laniweko.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20210901161125.pdfIn PDF document text
    • http://rideco.hu/upload/file/87028987710.pdfIn PDF document text
    • https://krusomying.com/data/file/79241314535.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/45b4bf15e989f24501a246f6996d7dea/71486431207.pdfIn PDF document text
    • http://nemochem.cn/upload/files/jevuxawefuxatukuloxej.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/wotusogaketiwagolineke.pdfIn PDF document text
    • https://producto.works/userfiles/file/foginajoledur.pdfIn PDF document text
    • https://fivetc.net/uploads/files/rojafuxakarenisi.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb21dd86c4---39152528762.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/86812061946.pdfIn PDF document text
    • https://www.serwkom.pl/plugins/ckfinder/userfiles/files/70275461321.pdfIn PDF document text
    • http://bernendorf.ru/userfiles/file/venof.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/84835463185.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/03fb3c7546cad9ccf75c059f49e34d30/xudikobotunubitu.pdfIn PDF document text
    • https://bestcaps99.com/ckfinder/userfiles/files/xidibofajapanawa.pdfIn PDF document text
    • http://chemonova.com/FCKeditor/file/sinukifa.pdfIn PDF document text
    • http://easyhypermarket.com/userfiles/file/15367783083.pdfIn PDF document text
    • http://newo.ru/files/files/pegow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=el+criticon+baltasar+gracian+pdfPDF link annotation
    • 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_off0000c01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD833 10784 bytes
SHA-256: 49c141d5763a9fb03aa74066ea6780290982bd7cb8add10e1fac4931f3903381
font_02_sfnt_off0000f0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 18288 bytes
SHA-256: 857ad5754e5d6de2058bbd30fa60545b7a1cad41607d84d965a45b208845d4f0