Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a6f5efff18b612…

MALICIOUS

PDF

78.1 KB Created: 2022-04-25 02:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-10
MD5: bb715b42c3fd44ecadd2bd2bfb81dce2 SHA-1: 55ef42d9ea1cdacae68258f20f6cabaf041ae615 SHA-256: 18a6f5efff18b61220f043ec03efbadfe70c4a6a97918bff8e8db444c01b782b
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://lovig.co.za/YmrXLWy8?keyword=o%20que%20fazer%20para%20engravidar%20mais%20r%C3%A1pido%20poss%C3%ADvel PDF link annotation
    • https://fowuxodujokuk.weebly.com/uploads/1/3/4/3/134310829/losame_vatakubobe_sebilijunato_mujedawive.pdfIn PDF document text
    • https://votebefi.weebly.com/uploads/1/3/4/7/134715150/sararidimis.pdfIn PDF document text
    • https://duzozutilitu.weebly.com/uploads/1/3/0/9/130968921/satuvunozorativu.pdfIn PDF document text
    • https://rinavogorefun.weebly.com/uploads/1/3/4/4/134446464/80e36afa.pdfIn PDF document text
    • https://boyamusic.nl/app/webroot/files/files/liwowudebapivojejigerusej.pdfIn PDF document text
    • https://thaodienland.com/fckeditor/editor/filemanager/connectors/php/temp/file/89330929155.pdfIn PDF document text
    • http://offerparts.com/upload/files/napilelofitepowovemexuxud.pdfIn PDF document text
    • https://geratezozadugul.weebly.com/uploads/1/3/4/3/134339700/3b4ea38f474dfa.pdfIn PDF document text
    • http://rotarybrescello.it/userfiles/files/90624180766.pdfIn PDF document text
    • http://moscowprice.com/content/xuploadimages/file/11648208913.pdfIn PDF document text
    • https://gatheritup.com/js/kcfinder/upload/files/50266000508.pdfIn PDF document text
    • https://lamekibig.weebly.com/uploads/1/3/4/6/134652122/b94be.pdfIn PDF document text
    • https://pesipexis.weebly.com/uploads/1/3/4/3/134377561/kometu_xasikogimuwoj.pdfIn PDF document text
    • https://birulivalofa.weebly.com/uploads/1/3/4/0/134013213/1039015f993a61.pdfIn PDF document text
    • https://saxegise.weebly.com/uploads/1/4/1/5/141585430/9932449.pdfIn PDF document text
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/zoberezimot.pdfIn PDF document text
    • https://fabebebu.weebly.com/uploads/1/3/2/7/132740756/lubexagam.pdfIn PDF document text
    • https://cqc-material.com/app/webroot/userfiles/files/pedarezapumawarejo.pdfIn PDF document text
    • https://dojovirofolabi.weebly.com/uploads/1/3/1/0/131069789/luborusisimu.pdfIn PDF document text
    • https://xaxusadusu.weebly.com/uploads/1/3/4/4/134497069/sinego.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_off0000c7bf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c7bf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD1 18880 bytes
SHA-256: 4738a123adb3102dd8a7917d662cd372d08e63a454641b811ea22af1961744cc
font_02_sfnt_off00010e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E82 11384 bytes
SHA-256: 2195b76ac83f5122e5215066fa0109c60f1364bd1646b19acff13b4adacaf0c5