Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6685a573a1e2bc…

MALICIOUS

PDF

114.5 KB Created: 2021-10-24 19:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 498bbc8e8bbec2fd7cbb917cf77f08a5 SHA-1: 9f8c843d9c58bbc9470fe2086ad6d21863233948 SHA-256: 2b6685a573a1e2bcaf652f2b9f919158874e834861f72f88621c11078a579a5d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://coretry.ru/uplcv?utm_term=secrets+of+the+mind+worksheet+answers PDF link annotation
    • https://mimpiindahsatu.com/contents/files/86602869331.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/161589d9a9dbd4---padabobowoniwem.pdfIn PDF document text
    • http://srcchaika.ru/files/uploads/files/laluzowawiz.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/lavazedavikixog.pdfIn PDF document text
    • http://sanraimundo.cl/dyn/uploads/file/61027546750.pdfIn PDF document text
    • http://flixgolf.com/ckeditor/ckfinder/userfiles/files/jizenulanexegadevakuma.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/27158450700.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/vutawekupox.pdfIn PDF document text
    • https://rajakedua.com/contents/files/tidubokawosutowutesesoma.pdfIn PDF document text
    • http://sro52.ru/uploads/files/90274370673.pdfIn PDF document text
    • http://zopos.zohukum.com/ckfinder/userfiles/files/46110855300.pdfIn PDF document text
    • http://fairway.cc/images/blog/file/jajodiwetimusaxudusi.pdfIn PDF document text
    • http://xn--80aamwn.xn--p1ai/userfiles/file/waduvidef.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1616755202eb83---12185596974.pdfIn PDF document text
    • http://tdsns.ru/userfiles/file/dejixifazo.pdfIn PDF document text
    • http://www.satunatc.ac.th/ckfinder/userfiles/files/pevelaf.pdfIn PDF document text
    • http://aviafond.ru/userfiles/file/xifazonuwukitigafanusazu.pdfIn PDF document text
    • https://irastuff.com/admin/ckfinder/uploads/files/93483567954.pdfIn PDF document text
    • http://cuspsurgeons.com/userfiles/file/6234931354.pdfIn PDF document text
    • http://restokrat.info/userfiles/file/tapalarisudozijel.pdfIn PDF document text
    • http://csc0851.com/userfiles/file/20210908185415_4tga68.pdfIn PDF document text
    • https://bolahijau.com/contents/files/pusekavudubu.pdfIn PDF document text
    • http://hulstcustoms.ru/uploads/files/8450079708.pdfIn PDF document text
    • https://bientannamhuy.com/wp-content/uploads/files/62264334200.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/18403915872.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_off0001593e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1593E 10948 bytes
SHA-256: a0a865c7ad7755743707e8d305cf8d042e528570ee17f30be98af74142d73949
font_01_sfnt_off00017280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17280 19020 bytes
SHA-256: 97334e888d1d749cabfcce99705a5c855e00f8d9306799b204354abc8d97b368
font_02_sfnt_off0001a3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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