Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d4a4ebd7373108…

MALICIOUS

PDF

91.9 KB Created: 2021-07-29 14:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: e7edb266f0124b9887e0eb960c0fabb4 SHA-1: e4e4f818ce8191904918635c2ed505470e9e8e1c SHA-256: c5d4a4ebd73731087d03cc9d7ffcba31cf01740f40271b68972072c5f8dd19b9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://actorconseil.com/files/file/21525593840.pdf In PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/8fa98c3e7479c2d17f00cd953fbaf3f3/69215786599.pdfIn PDF document text
    • http://pawsandtiaras.com/ckfinder/userfiles/files/dimunemobumanevukegebupug.pdfIn PDF document text
    • https://auto826.com/uploads/files/90344549519.pdfIn PDF document text
    • http://poorclarescork.ie/images/51680862165.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16086c0f3e38fa---merep.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606e5fe11a43d---sasunufagapowatid.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/9e0971c15026e6c454f5e5ecc3a3efa4/65071050147.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/663ed6f45a49c1e446c2b18774f91fbe/mitibupinugejivu.pdfIn PDF document text
    • https://businessservicesuk.com/userfiles/file/17884270605.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/66943570006.pdfIn PDF document text
    • http://hitplus.eu/userfiles/file/89620419816.pdfIn PDF document text
    • http://amandamaitland.com/images/file/669738173.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/b71ed15b1b89bb3d899eb9e553b06cb6/16227524425.pdfIn PDF document text
    • http://becucci.it/userfiles/files/44291161868.pdfIn PDF document text
    • http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wuxavitejodetamubixime.pdfIn PDF document text
    • http://sethhukumchandschool.com/userfiles/file/80810377591.pdfIn PDF document text
    • http://dentalcenterstudio.it/userfiles/files/gabimevavutos.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/94d67b002136af43eb92b948a387df7f/velik.pdfIn PDF document text
    • http://naasschoolofmotoring.com/fckeditor/userfiles/file/42363086256.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/052ccced6d664ba8486cdaec0bb5ba34/16314299615.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/97basnkuk00lfemf0atk06b2gv/rigojijugagiwelozoj.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/zuzarajipalezif.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/fe0a1c85b1f0814f50c6bf81de5274ac/88453317152.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072109e804d2---45546929081.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=smcr+model+of+communication+is+given+byPDF 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_off000102a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB7 16824 bytes
SHA-256: 1c40b0b33ce890a9dc0de4a5769a82b357bd50f85459cc7c0658515cfc84a1c5
font_02_sfnt_off00014695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14695 11312 bytes
SHA-256: a39c9efcf6e2b0dca7fdd85b6478b72ca7c840d259851ccacab22c3b4b28bfce