Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99c1f8991432c9b…

MALICIOUS

PDF

83.4 KB Created: 2021-09-23 23:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: b375bcf2115077ebc5f5680d539438a4 SHA-1: ed6f76d8d01108f63885900953e196c7362f1f57 SHA-256: f99c1f8991432c9b3462f8027e149543beae89d2b8aa5e97e3dfde4ed5f344ad
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/40503808908.pdf In PDF document text
    • https://we-plus.tw/ckfinder/userfiles/files/54885187143.pdfIn PDF document text
    • https://beldapin.com/calisma2/files/uploads/16425402749.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab1187eddd---narawizufaxuwusita.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/logojow.pdfIn PDF document text
    • http://dpsnowodworze.pl/userfiles/file/ripunimepun.pdfIn PDF document text
    • http://mprime.net/ckfinder/userfiles/files/rejaxolirutudino.pdfIn PDF document text
    • http://uptownherndon.com/uploads/files/19535619990.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/dasalinodikoxewabimowezug.pdfIn PDF document text
    • http://baobianhkhang.com/upload/files/6216677281.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/gizikokibenowubeleg.pdfIn PDF document text
    • http://adidravidar.com/ckfinder/userfiles/files/33464262994.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/58147894488.pdfIn PDF document text
    • http://www.vinoplaza.nl/img/upload/files/zufowasabe.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/xibaxozuxawikoguwexuvo.pdfIn PDF document text
    • http://topmebli.com/content/xuploadimages/file/golojataxudu.pdfIn PDF document text
    • https://copperscraphandlers.com/ckfinder/userfiles/files/bekobonilutivudafufinujuv.pdfIn PDF document text
    • https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/mogusedesexuxozubowuxisib.pdfIn PDF document text
    • http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tuduzukuwexumevexal.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/893d256d8de41b4a243f348abab911d5/jokovimijiruxuloruramimo.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/8512119770.pdfIn PDF document text
    • http://islaminkiel.de/webmisr/uploadwebmisr/file/21270304074.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+create+a+video+calling+app+in+android+studioPDF 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_off0000e098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE098 10932 bytes
SHA-256: 0965f098d0449ba2b06d1b10374ab4440502944b1a19a6efb3bbf3c3703d1dad
font_01_sfnt_off0000f9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D2 17652 bytes
SHA-256: c7cbd17ca07244a1aeb655eb04f0a9742f3480eb3813a0ddca677ea898b7893e
font_02_sfnt_off000127b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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