Malicious PDF — malware analysis report

Static analysis result for SHA-256 84798d20a6f76878…

MALICIOUS

PDF

68.4 KB Created: 2021-09-22 11:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: 2bce3404faa77c497f92d2b4b82c4690 SHA-1: d4133db97ade509def496507d932f20b93c0dbf1 SHA-256: 84798d20a6f7687831e1419f04f4a6ac68c21076922d0e5d3a044d5b28d9a4e1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://huntic.ru/uplcv?utm_term=excellent+throw+hack+pokemon+go In PDF document text
    • http://hnkingdee.cn/Files/file/20219123954.pdfIn PDF document text
    • https://12shio3.com/contents/files/muxod.pdfIn PDF document text
    • http://phoiinnhiet.com/images/uploads/files/vapokuxudipiwuzifam.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/32021743740.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/37405125133.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/faluzefasonewojilimo.pdfIn PDF document text
    • http://reklama-kemerovo.ru/files/files/70999638075.pdfIn PDF document text
    • https://hyundainhapkhau.vn/upload/files/13351116221.pdfIn PDF document text
    • http://makinsushi.com/uploads/files/50669519685.pdfIn PDF document text
    • http://xageunion.com/userfiles/file/93471554521.pdfIn PDF document text
    • http://architectureanddesign.it/userfiles/files/70551076927.pdfIn PDF document text
    • http://dvg.asia/ckfinder/uploadfiles/files/78909458776.pdfIn PDF document text
    • http://veitali.com/upload/files/24177846844.pdfIn PDF document text
    • http://www.como-grup.ro/fisiere/file/14539286883.pdfIn PDF document text
    • http://suachuaspa.com/upload/images-content/files/luberogezisulogesixoriv.pdfIn PDF document text
    • http://cuanhomkinhtoanthang.com/media/file/47324638471.pdfIn PDF document text
    • https://candica.pl/ckfinder/userfiles/files/supemuzuzovigebob.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/siduliduw.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346c7740eac---90685187347.pdfIn PDF document text
    • https://sarenpinler.com/calisma2/files/uploads/3124231183.pdfIn PDF document text
    • http://xn--oy2b19v1mb1yi.com/userfiles/file/renef.pdfIn PDF document text
    • http://sculecuacumulator.ro/app/webroot/files/userfiles/files/57513016403.pdfIn PDF document text
    • http://cappellastudio.it/userfiles/files/surel.pdfIn PDF document text
    • http://lpc2529.com/piceditor/file/biwifavuwovidiluloxi.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_off0000af77.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000af77.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78E 10824 bytes
SHA-256: e34b7e37209a8d31ae7ac41b3b03b314c3a13c8843783f1c2737df4659093a11
font_02_sfnt_off0000e06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06C 14396 bytes
SHA-256: 749a9fa0d106d6f7db72c85f5f00c4f24cb0ece836d476fce008c9580103e8ad