Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a73c8e71dac31c…

MALICIOUS

PDF

81.0 KB Created: 2022-04-06 18:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 62e5d85e446ad0dc3776a7fcd1446e88 SHA-1: 86104cb9e37055bd9d1a60cf327131f73eec1110 SHA-256: 18a73c8e71dac31cde401c0f83f367661a44dee0b0be45d630627be4b3e5133a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fecuq.co.za/YmrXLWy8?keyword=plan%20unico%20de%20cuentas%20colombia PDF link annotation
    • https://ranetaxute.weebly.com/uploads/1/3/4/8/134886021/1948303.pdfIn PDF document text
    • http://navicom.net.vn/ckeditor/kcfinder/upload/files/169309742.pdfIn PDF document text
    • https://tahitotfalu.hu/ckfinder/userfiles/files/67274858165.pdfIn PDF document text
    • https://puvugopusu.weebly.com/uploads/1/3/2/7/132711965/puzefisifa.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/koziputatetaje.pdfIn PDF document text
    • https://sudogela.weebly.com/uploads/1/3/4/8/134846286/32123145b.pdfIn PDF document text
    • https://downtownmakeover.com/admin/kcfinder/upload/files/67240722226.pdfIn PDF document text
    • https://malayalamfoundation.org/admin/my_files/file/laripajofokewutiditabuzak.pdfIn PDF document text
    • http://isotope3.pm-ural.com/uploads/files/20367750538.pdfIn PDF document text
    • https://annamsaigonlaw.com/upload/files/9560248183.pdfIn PDF document text
    • http://www.luchpain.ru/kcfinder/upload/files/dinobatobebani.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/xogamimomujamilerobib.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/safogiwotu.pdfIn PDF document text
    • http://starlistthailand.com/uploads/file/jipuxegegivu.pdfIn PDF document text
    • http://gonuldoviz.com/upload/ckfinder/files/liguxizewonupeso.pdfIn PDF document text
    • https://mgs-on-track.com/app/webroot/userfiles/file/57855689626.pdfIn PDF document text
    • https://karmak-makina.com/upload/files/54575231515.pdfIn PDF document text
    • https://kedadatiwuji.weebly.com/uploads/1/3/4/8/134891749/d8773c7e207.pdfIn PDF document text
    • http://uijaebooks.com/uploadfile/board_data/202203/file/1648260017.pdfIn PDF document text
    • https://walonani.weebly.com/uploads/1/3/4/3/134372970/6f111ad0739977b.pdfIn PDF document text
    • https://ewt.cz/res/file/21521534395.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_off0000d403.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d403.bin)

Related samples 3

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_off0000d403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD403 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC15 18308 bytes
SHA-256: 322e5c4d57cd0111990de84ad92cdc507c513694124f0c008633997a2d6788c9
font_02_sfnt_off00011b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1A 10672 bytes
SHA-256: bdb44997bfbf7d38391d92972da28c43363fe1d53fb709761c44bf4f955e93d6

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