Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61b26aed21ec4c4…

MALICIOUS

PDF

68.0 KB Created: 2021-09-26 16:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 514b959fe98ccf58dfcadcffc7514f39 SHA-1: 9c8f21b178df8b9e248b9b126ec9a78bc2653965 SHA-256: b61b26aed21ec4c405657c5567946ab0f260a4189b1c0ebc54530820f1484ccb
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://maroba-zirndorf.de/file/14301798126.pdf In PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1614b225873da3---63577496029.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/66998961448.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/71608514636.pdfIn PDF document text
    • https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/62810416999.pdfIn PDF document text
    • https://blokhol.com/upload/files/80266938064.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/jadazemapodovu.pdfIn PDF document text
    • http://csc0535.com/userfiles/file/20210917001627_68av5j.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16141d687a42f4---7405709069.pdfIn PDF document text
    • https://0922.sproname.com/files/userfiles/files/towib.pdfIn PDF document text
    • https://ecoquimica.cl/dinamicos/uploads/file/kolosuvitif.pdfIn PDF document text
    • http://garageanything.com/js/upload/files/38231107464.pdfIn PDF document text
    • http://ozgu-yapi.com/firma/files/ralusojatum.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16140031037dda---50038842273.pdfIn PDF document text
    • http://sokole-tps.pl/userfiles/file/fezunitomarekigojiw.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/89235235867.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/43558868021.pdfIn PDF document text
    • http://vanguardhungary.hu/userfiles/file/8600855185.pdfIn PDF document text
    • https://stepweystudy.com/ckfinder/userfiles/files/kijunedulanobusikofatufe.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/17478130429.pdfIn PDF document text
    • https://infrive.ru/uplcv?utm_term=sunny+leone+ki+new+filmIn PDF document text
    • https://lexcyberia.com/userfiles/files/40472319631.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 extracted file (font_00_sfnt_off0000ae1a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000ae1a.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE1A 10316 bytes
SHA-256: fd9a22cb4aeead231e8e4de34cb596f8e72b429e210e235abaf0dcc33ee67641
font_01_sfnt_off0000c56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC56A 14692 bytes
SHA-256: 40510e22f55cf389f4d71916f0236da5d6529b1472c7b7c287ecbd2997b635fc
font_02_sfnt_off0000ea81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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