Malicious PDF — malware analysis report

Static analysis result for SHA-256 15319281e09b2c31…

MALICIOUS

PDF

80.3 KB Created: 2021-09-16 14:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 098834e8bf3214e0dd0006476f97a93a SHA-1: 7c47ba9bc3abb5e13f92a9e59c179d72aef6b550 SHA-256: 15319281e09b2c318a26549619ad631317dcb2963db2ca0721a404569179e50d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://kiko168.com/UploadFile/file/20210911142052833.pdf In PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/31591311445.pdfIn PDF document text
    • http://begemot-rus.com/uploadfiles/file/2021090616253073499.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-16/20210916113352302319.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109121846446182.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/19813268100.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137ba64b0b2b---61486037051.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/25270828473.pdfIn PDF document text
    • http://unternehmensberatung-hegenbarth.com/userfiles/file/piximuwisasapakozuzudo.pdfIn PDF document text
    • http://orel-trinity.ru/sites/default/files/file/doxukotanijosajibi.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/23380902876.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/dafud.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/petulelupopukiburi.pdfIn PDF document text
    • http://miet-boot.ch/images/uploadedimages/file/82686756887.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/nutinizavumigob.pdfIn PDF document text
    • http://worldsocialistpartyindia.org/ckfinder/userfiles/files/vufavuboxolubedopaxisigex.pdfIn PDF document text
    • https://mobisteelegypt.net/userfiles/file/55645602619.pdfIn PDF document text
    • http://foodchemsino.com/d/files/55093180274.pdfIn PDF document text
    • http://angelascanu.it/uploads/file/tifelisubufavo.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/pexelejubeporu.pdfIn PDF document text
    • http://sireny.net/share/files/45559258033.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/59468760943.pdfIn PDF document text
    • https://hanedantoptan.com/upload/files/gudigov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=porn+mod+apk+downloadPDF link annotation
    • 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_off0000cfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE2 10240 bytes
SHA-256: 59e585fd0e52f6a95ed3d2f2aadac341eb5c8890c3ee846fffcbe32251e501b2
font_01_sfnt_off0000e6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000feea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEA 19700 bytes
SHA-256: aa3e15d01c6b2917a34011da62b6c540156080d38603ab4eaff2ad45ebac38fc

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