Malicious PDF — malware analysis report

Static analysis result for SHA-256 191c974904cc5609…

MALICIOUS

PDF

69.5 KB Created: 2021-09-26 10:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 0c1a5797bf49b9bfcb84dae58420b1e3 SHA-1: dc60d2db2b62d3cfc7711d13a65f9d81eba8fe88 SHA-256: 191c974904cc5609aa7aeaf98b1f91509a64f5f41fd4079aecc24c9835030079
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://irlanc.ru/uplcv?utm_term=how+to+add+custom+widgets+on+android PDF link annotation
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210910160439.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/dubokilureguzidoko.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/10158975422.pdfIn PDF document text
    • https://bibliotheque-des-arts.com/ckfinder/userfiles/files/sodoxukezodekusawafotobez.pdfIn PDF document text
    • http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/vovew.pdfIn PDF document text
    • http://rrbrentacars.com/files/others/17614730989.pdfIn PDF document text
    • https://cdmsig.com/ckfinder/userfiles/files/42681041477.pdfIn PDF document text
    • http://af.ssla.ru/images/fornews/files/11768096316.pdfIn PDF document text
    • https://liho.cz/UserFiles/File/17739839498.pdfIn PDF document text
    • https://aayams.com/userfiles/file/11863628235.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/zomoditidatekiba.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/vozekovepikeniketu.pdfIn PDF document text
    • http://kurumakaitori-one.com/js/upload/files/puveju.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/fewilunalobiwu.pdfIn PDF document text
    • https://slide-bearing.com/d/files/gakoxejiwoper.pdfIn PDF document text
    • http://iseveranscopy.com/upload/editor/file/pukugo.pdfIn PDF document text
    • https://gemma.lucien-sv.info/uploads/files/614ed6f735e62.pdfIn PDF document text
    • https://dellrein.ru/content/file/difulot.pdfIn PDF document text
    • http://travellerisland.com/files/tewujexobuduteza.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/lawonivinotikiv.pdfIn PDF document text
    • https://kasihpaham.com/contents/files/pabogebosotabutowivutok.pdfIn PDF document text
    • http://bociany.sk/media/file/62234175684.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
font_00_sfnt_off0000ad75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD75 16560 bytes
SHA-256: 88dc372450258b4f0e14b955dc2e2456b7c3fa726e50f8cad37eacb295d4ca7c
font_01_sfnt_off0000d7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 10844 bytes
SHA-256: 020b4eaccffc638252c5e7175a3b128436fd87a2d8b79e3857d039eee76ea176

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