Malicious PDF — malware analysis report

Static analysis result for SHA-256 4781502142fc8f0d…

MALICIOUS

PDF

78.5 KB Created: 2021-09-22 21:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: d651f78fafe6cc475ccead057e5c7f1d SHA-1: 803348229a2c7b02ea12ec352e088d9b96a8fab8 SHA-256: 4781502142fc8f0de84bd2562351957cb9861c479008c50a3e72697374c13aca
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://triosms.com/userfiles/file/88982257823.pdf In PDF document text
    • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/39020211964.pdfIn PDF document text
    • http://bjerkelunden.org/content/files/userfiles/file///kulonetat.pdfIn PDF document text
    • http://gaushalango.com/uploaded_files/userfiles/files/5395926701.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/55655461162.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/11009965936.pdfIn PDF document text
    • http://waetsukai.jp/system/ckfinder/userfiles/files/67985423238.pdfIn PDF document text
    • http://onroerendgoedindex.nl/images/uploads/zenoxatibomonizilul.pdfIn PDF document text
    • http://congluc.com/upload/files/73266259317.pdfIn PDF document text
    • http://movietek.vn/hinh-anh/files/68631490714.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613afbc0cb19a---26679808711.pdfIn PDF document text
    • http://sarica.com.tr/ckfinder/userfiles/files/39031729842.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1d4a896ff---98698382784.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/ziwasazusetutu.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/92012253777.pdfIn PDF document text
    • http://aldobini.it/userfiles/files/96820879946.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/vebuwijanejer.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/gisoranojuxudakutetexedi.pdfIn PDF document text
    • http://travellightnepal.com/userfiles/file/golesamujukedas.pdfIn PDF document text
    • http://partnercable.com/files/renubebovuturul.pdfIn PDF document text
    • http://kubkao-kubpla.com/userfiles/files/60063972718.pdfIn PDF document text
    • http://szakkepzosiklos.hu/upload/file/73691896499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=credit+card+number+generatorPDF 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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 10772 bytes
SHA-256: b9a3ef5a8017390b622e0f6f1bc9a85ec0f6ce7d5715e533228167b7aaa96214
font_02_sfnt_off0001014a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014A 17052 bytes
SHA-256: 9f3cef042c0ff99da70e8379a0dac225c866f6835d3d5ef26d2cdaffde2268e2

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