Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8affcd05e122fa…

MALICIOUS

PDF

72.0 KB Created: 2021-09-27 20:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 1abab9b37a7d917120a64c4da6b2f127 SHA-1: 0b1fb8372df6fda79d7bbd8e2626da396e4def57 SHA-256: aa8affcd05e122fa6fe481c8c1ebf3fd66393109bd2dc3742534900e981b604d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://studioassociatoemc.com/userfiles/files/netudavimomewubadedodesex.pdf In PDF document text
    • http://chinahongji.com/d/files/21287719332.pdfIn PDF document text
    • http://funkyspa.net/ckfinder/userfiles/files/34192667351.pdfIn PDF document text
    • http://huthamcauquanggiap.com/upload/files/metedirim.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/29787585512.pdfIn PDF document text
    • http://dush-kz.ru/uploads/fck/file/finamuviludefegef.pdfIn PDF document text
    • https://glamweddingdesign.com/userfiles/file/toxekufuxeridij.pdfIn PDF document text
    • http://doanhnhangiaophanvinh.com/images/files/64866158346.pdfIn PDF document text
    • http://kdsonline.org/userfiles/file/3350674659.pdfIn PDF document text
    • https://sitarasign.ir/data/file/3429403079.pdfIn PDF document text
    • https://hardlineconstruct.ro/app/webroot/files/userfiles/files/dipakipa.pdfIn PDF document text
    • https://fasaac.org/temp/files/pasotuwageziku.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613337b5290f7---felozokuvorow.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/54214659779.pdfIn PDF document text
    • http://bn-biz.com/userData/board/file/zadiwuxariluxekofexavix.pdfIn PDF document text
    • http://traktor-tv.de/sites/default/files/file/54186907341.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/22004925872.pdfIn PDF document text
    • http://pc580.cn/upload_fck/file/2021-9-13/20210913001919261708.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ptubv1b4pculid8gnaq8ijtul7/26121966256.pdfIn PDF document text
    • https://thebillionbottom.com/business_school/uploads/file/midumimaf.pdfIn PDF document text
    • https://kanat.com/upload/ckfinder/files/84312128363.pdfIn PDF document text
    • http://sdes.in/uploads/74236163930.pdfIn PDF document text
    • https://justforjetscatering.com/userfiles/image/files/wobomovidovi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=fs16+download+freePDF 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_off0000b4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F5 10440 bytes
SHA-256: a45c4650be787e99b69c17b0ddec4a63b014ec3261826cf968ca1fed8be735a1
font_01_sfnt_off0000cce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F8 17860 bytes
SHA-256: 976a622f626577403c650d667c7e6c7ceeebb2e9f4c940b0f5e982a4fba20405

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