Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b66b0992a2dd83d…

MALICIOUS

PDF

72.6 KB Created: 2022-04-06 16:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: a4d83113cd1323aeb3cacd16ec18b7ca SHA-1: 6f8a3225a83da7af7180df36c81a6acf9a3c1251 SHA-256: 2b66b0992a2dd83d0a4d405387911ddcdf31b3328484eeca3300d4658bdf6dd0
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://cafij.co.za/YmrXLWy8?keyword=modelo%20de%20minuta%20de%20compraventa%20de%20derechos%20y%20acciones%20ecuador PDF link annotation
    • https://rajuwirorevub.weebly.com/uploads/1/3/5/3/135306937/1705856.pdfIn PDF document text
    • https://zamizugupaf.weebly.com/uploads/1/3/3/9/133999186/c02a66868a2.pdfIn PDF document text
    • https://bavalezamo.weebly.com/uploads/1/3/4/7/134749705/wotujum-wodadomekazo.pdfIn PDF document text
    • https://megidawuxuta.weebly.com/uploads/1/3/4/7/134729580/janugatuzowuro.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16243624a47e35---78230364959.pdfIn PDF document text
    • https://mujamixoto.weebly.com/uploads/1/3/0/7/130776872/9409796.pdfIn PDF document text
    • http://www.rhkapadia.org/Admin/plugins/kcfinder/upload/files/63074631998.pdfIn PDF document text
    • http://tccsrl.org/userfiles/files/57362158688.pdfIn PDF document text
    • https://sunsetlearningcenter.com/userfiles/file/wejojixigiv.pdfIn PDF document text
    • https://zevenaxef.weebly.com/uploads/1/3/4/7/134745307/guxegawoxujokajuga.pdfIn PDF document text
    • https://lujumibuxoze.weebly.com/uploads/1/3/5/3/135350241/7883642.pdfIn PDF document text
    • https://najoxoveg.weebly.com/uploads/1/3/4/6/134677255/3fe77.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/vujinetijupe-lemok.pdfIn PDF document text
    • https://www.hothousejazz.com/upload/files/68571436901.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/zefavekimavat.pdfIn PDF document text
    • https://fejenugid.weebly.com/uploads/1/3/4/0/134016750/wutipinozuvani_doritonikubivez_lezil.pdfIn PDF document text
    • https://lufokozu.weebly.com/uploads/1/3/4/7/134755413/53c9537a64cfe.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
stream_005_off0000e328.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE328 18504 bytes
SHA-256: 87b6d6f994197bebb55fd4f1da4f08e48961af763180a9443cd9d64325d2adae
font_00_sfnt_off0000b18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB18A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A1 11052 bytes
SHA-256: cad77007a1fa55663f4accc946d48d85559d3c5ca5c3e7faf7dbb71d83e9cca0

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