Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd72faf9821b2ca8…

MALICIOUS

PDF

86.1 KB Created: 2021-10-30 09:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 89220d687f712e2df800c7d3319d9b4b SHA-1: e7bb6abaa18c434832b00ba12b2e936f8eaabd24 SHA-256: cd72faf9821b2ca80769eef54168c28db4675f7f6739b58970b584c1171b47b1
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://cructi.ru/uplcv?utm_term=proof+of+income+form+pdf PDF link annotation
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/6119954061.pdfIn PDF document text
    • http://coaching-scolaire.net/userfiles/file/26190565141.pdfIn PDF document text
    • http://www.elstar.ru/uploads/files/83456406100.pdfIn PDF document text
    • http://baruraprotidin.com/assets/ckfinder/core/connector/php/uploads/files/25669607891.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/cf2d4b218f6e52f1e9be59c3c90a2cde/lovidamawumolofizufo.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/zulup.pdfIn PDF document text
    • https://fivetc.vn/uploads/files/17644231430.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/43181640796.pdfIn PDF document text
    • http://technestudio.eu/userfiles/files/33276635727.pdfIn PDF document text
    • http://inimtrento.it/userfiles/files/ramabega.pdfIn PDF document text
    • https://jiu-hang.com/upfiles/editor/files/nojezaviper.pdfIn PDF document text
    • http://sanyosushiglendora.com/uploads/files/sidomeje.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/72466041658.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/tafudalemufuxojaga.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/lamanevarakilopes.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141e8679245a---kosanuverazunekop.pdfIn PDF document text
    • https://pielinks.com/UserFiles/file/45299657481.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/3841854855.pdfIn PDF document text
    • https://znalac.com/userfiles/file/24094576758.pdfIn PDF document text
    • https://everywheregenes.com/uploadfile/qu26_qu106_com/files/totelojovuk.pdfIn PDF document text
    • http://hasdeu.md/data/userfiles/files/rovadogezenuwi.pdfIn PDF document text
    • http://eko-gospodarstwo.eu/files/file/16108606144.pdfIn PDF document text
    • 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_off0000ecb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB4 18064 bytes
SHA-256: 3ddcb74d58903ceae2424de87dd3d05e4f0ebeeb39bc5134b9917da9d9ff4cbf
font_01_sfnt_off00011c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C12 10308 bytes
SHA-256: c6b20f3ed83dd2fb500d27098edc14c5c364f025cd7f33b347c638704ecb5a77
font_02_sfnt_off00013331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13331 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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