Malicious PDF — malware analysis report

Static analysis result for SHA-256 941f3f56a1a94531…

MALICIOUS

PDF

86.7 KB Created: 2021-10-14 00:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 785a6aeeb15f47c3ab663ec8be8a3597 SHA-1: 17ebfdbc04c0266a0b86b4282cbaf30e67cc4659 SHA-256: 941f3f56a1a94531501927c36ae9b543362134feeaa86866e9d2922847d3f746
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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 http://musikpark-live.de/userfiles/file/21195986531.pdf In PDF document text
    • http://mai-colle.jp/userfiles/file/pozolutesatefigemaf.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/f4baca4863d8a0e9150123137877e67d/wamalofutajafo.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/58683891781.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/79079433468.pdfIn PDF document text
    • https://investincarpathians.eu/app/webroot/media/files/53503557324.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/divawosotejusizajubugiz.pdfIn PDF document text
    • http://engineersclasses4competition.com/files/others/bivadikilepi.pdfIn PDF document text
    • http://kanomax-nsk.ru/images/zapafilaleso.pdfIn PDF document text
    • https://hobbypet.cz/files/file/4335534831.pdfIn PDF document text
    • http://madurastones.com/userfiles/file/43408119379.pdfIn PDF document text
    • http://feminella.ro/upload/fck/lopedumutuvofewadibut.pdfIn PDF document text
    • http://techniq.ae/admin/uploadfiles/file/50557117083.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d313ca2031---lubelanaru.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/velaroxelepulibudizatizad.pdfIn PDF document text
    • http://poliinc.com/upload/files/31366370915.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/pinovededevepixaduwu.pdfIn PDF document text
    • https://duvarkagidierzincan.com/userfiles/file/wewavogadariratipokuw.pdfIn PDF document text
    • http://www.startbatteries.gr/ckeditor/ckfinder/userfiles/files/bakuxotubajirofijesizi.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc7efa2648---xikunumagevipefonevepoz.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/7081095851.pdfIn PDF document text
    • https://marathonblainville.com/userfiles/files/kuzedimifesamiju.pdfIn PDF document text
    • https://nocnepal.org.np/ckfinder/userfiles/files/85431656291.pdfIn PDF document text
    • https://lighthousemacau.com/html_upload/file/48784673898.pdfIn PDF document text
    • http://www.cavice.fi/tiedostot/files/14204606872.pdfIn PDF document text
    • https://floraplant.gr/FCKeditor/userimages/file/59824549481.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/7xhmvLXWVJc/uplcv?utm_term=manual+and+automatic+transmission+carsPDF 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_off0000ec70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10482 18424 bytes
SHA-256: 24b182ed92ddaa9fe648357fd731bd9cbf48ca8f14e60308aded63a51acf124f
font_02_sfnt_off00013518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13518 10492 bytes
SHA-256: 48a907ce174e3ee44e278f0714873009977766a50c717318601e4828c675728b