Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9978fad5bcbb1fc…

MALICIOUS

PDF

74.5 KB Created: 2021-09-25 01:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: d1f837710a6b413dd303116e8fbbb328 SHA-1: 82620260f51b21b7fcacdccdeec6bbb01f77a8da SHA-256: f9978fad5bcbb1fc78f59195e1d474ceecb88513836b954a89f3b44b7868efb2
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://vestol.bg/files/file/14152395623.pdf In PDF document text
    • http://kondicionery-pushkino.ru/upload_picture/file/jivaxefib.pdfIn PDF document text
    • https://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/xupavafibafi.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/gatugijavulufobedotovadi.pdfIn PDF document text
    • http://dealershop.es/userfiles/file/zonodidukarebo.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/410817784.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/67099835869.pdfIn PDF document text
    • https://xn--80aggmy8c6c.net/UserFiles/File/mugerudoxigegup.pdfIn PDF document text
    • http://cichanski.com/Upload/file/97273473458.pdfIn PDF document text
    • http://norilsk.torbay.ru/images/uploads/file/63807221207.pdfIn PDF document text
    • https://serihosting.com/calisma2/files/uploads/9731335377.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/43420012205.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/12770307918.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/9829001935.pdfIn PDF document text
    • http://vina2002.com/uploads/files/9180481134.pdfIn PDF document text
    • http://carbontuning.ru/file/58427819233.pdfIn PDF document text
    • http://www.toptehnik.si/images/56574491976.pdfIn PDF document text
    • https://xnkvinatimex.com/uploads/files/84770847213.pdfIn PDF document text
    • http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/23931441065.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mudapuno.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/22375004338.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/lepinamewesu.pdfIn PDF document text
    • http://harlit.com/upfiles/file/72724399922In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=iphone+11+gpsPDF 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_off0000b8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E0 20476 bytes
SHA-256: 7774b20d173dda597aa442c2ab7bfad7d817830c708873556da5f4f912ef74a9
font_01_sfnt_off0000ee22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10639 10036 bytes
SHA-256: c19e3912444bb0a7c81dce7c5447c2e080a0f4f84626ac8efc29299ff60ac198

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