Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c44239f59640e…

MALICIOUS

PDF

84.5 KB Created: 2021-06-30 20:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 4e5ffff6d26cd5737ca4d6a0f29125d2 SHA-1: 2b58cd479ae61553b7cbe9e24df7838f5a72eba1 SHA-256: 4e3c44239f59640e2b99b69e408eeae141ff4c1f20418713be7517f1e07a7fd6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://historia-bfured.hu/userfiles/file/zejenexi.pdf In PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/msrltff0i8497946aei03cmq1f/47598009475.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/dupolanivarine.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/29631448355.pdfIn PDF document text
    • https://tasleemdubai.com/userfiles/files/wuxujizolifi.pdfIn PDF document text
    • http://yejida.com/userfiles/file/fepizapenifi.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737a04506ba---sidugidirodomivumalezig.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26afaa7aa6---17731097158.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/32449928007.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/kqkkhha14ekfdbvd9rqur0n0r7/39227117241.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607aae9250e75---6554423442.pdfIn PDF document text
    • http://614move.com/clients/4890/File/68503486053.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f20a49d68b---kowunapulapekozaropul.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a34e1e2fc5b---pegalawidak.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/lilokusedefu.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/12171471473.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a501a7fc00---felawapoveburumepuneb.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaef861572---jopopemerowuxadifubiku.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16086099bca543---xabavulesesufakuguti.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/jixawewivak.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/leludowuner.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/lovenabuzosi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=have+a+great+monday+imagesPDF 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_off0000e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE998 10716 bytes
SHA-256: cb494535170357d9cca6d4fc828047c672d85c28502a77d1e11af0ebd908798b
font_01_sfnt_off000101f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F7 16836 bytes
SHA-256: 6fe08b172131fcca6e6a2bbf3fb4863bb51f5d3b8cb0b57e0ad62389c01d708a
font_02_sfnt_off00012d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1