Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db044c88a84f9c…

MALICIOUS

PDF

72.5 KB Created: 2021-09-12 19:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 59d6ec89b928f852209e76da56f1c94f SHA-1: 02e44f625779b838b0cee0340bf91fac6765badd SHA-256: c5db044c88a84f9c0d0a361588bf27941f1d4bf550b0139b5f1774b3fb973129
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://kawanmto.info/contents/files/98319261005.pdf In PDF document text
    • http://atya.eu/files/file/janeromavurabuju.pdfIn PDF document text
    • https://taksis.lv/taksis/userfiles/file/sazavunuvajokoxafekuxe.pdfIn PDF document text
    • https://premium-house.uz/images/file/segugemumilujubopudu.pdfIn PDF document text
    • http://sakesushilakehavasu.com/uploads/files/waderubadosa.pdfIn PDF document text
    • http://larrysiegellaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/divinugakibuximebimonox.pdfIn PDF document text
    • https://inprovituruguay.com/ckfinder/userfiles/files/16224601918.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd3d724d0e---65162598102.pdfIn PDF document text
    • https://mlspoland.co/files/file/sikoparisujerokezevel.pdfIn PDF document text
    • https://amgaa.org/temp/files/10591874680.pdfIn PDF document text
    • https://beautydiction.com/ckfinder/userfiles/files/626209132.pdfIn PDF document text
    • http://russkiivopros.com/images/FCKeditor/file/36776996993.pdfIn PDF document text
    • http://fluitec.fr/ressource/site-image/files/38503183501.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/63540388068.pdfIn PDF document text
    • https://childrencareandliteracysociety.org/userfiles/files/87624387804.pdfIn PDF document text
    • http://burningspearmarketplace.com/js/ckfinder/userfiles/files/94141076780.pdfIn PDF document text
    • http://domingo.hu/ckfinder/userfiles/files/96782919859.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/wumujosozoxiwebudisubuk.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/75455915794.pdfIn PDF document text
    • https://livbiopharma.com/userfiles/file/25624450605.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/nedomoweterixunup.pdfIn PDF document text
    • http://ohxto.com/uploaded_files/userfiles/files/46314788762.pdfIn PDF document text
    • http://carscaso.com/js/upload/files/6738457664.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=html5+bubble+shooterPDF 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_off0000bc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9F 15796 bytes
SHA-256: 48a649b3505e29ec557dc511c87fccad016db8a09e864b5ca965d38518ad8a8b
font_01_sfnt_off0000e4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD2 10380 bytes
SHA-256: 469e36af629ffbca30f5ae743d98f37e845bc0178a8f964b3ffc29467371522c

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