Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d6a43db1e45ad9…

MALICIOUS

PDF

87.0 KB Created: 2021-10-19 13:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 41a4ae69401bef233c928a2ba9b1593d SHA-1: 002a514a6014332b960405497eb34b0f9b7a199c SHA-256: c5d6a43db1e45ad926ac1ff9df43756807cc553b663891c20b5a3727b2ce23f1
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/879e50f80ee5537da7b5b3cf50c721f9/zejusujamo.pdf In PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/lb0o1fnouh9qngj63iltfi2132/15007472220.pdfIn PDF document text
    • http://hyunsin.net/userfiles/file/50801428450.pdfIn PDF document text
    • http://gizmakina.com/depo/sayfaresim/file/duburukajefajos.pdfIn PDF document text
    • https://ambalatender.com/upload/files/32740682755.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/011e68cd0f010cb233366765260525ba/riwiwelupizurezazonelup.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/maxifow.pdfIn PDF document text
    • http://vucert.vn/uploads/files/nelanobidusoxajuzuj.pdfIn PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/437369740.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16133d86474a2c---70058033269.pdfIn PDF document text
    • https://jkmart.net/FCKFiles/File/wifetajoxukolowevubit.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/sanikawomosatekogorituma.pdfIn PDF document text
    • http://sky1981.com/asset/uploads/files/28145679090.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20211011135057.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/zularoxurigewirevebuta.pdfIn PDF document text
    • http://organizeteknik.com/userfiles/file/rikowu.pdfIn PDF document text
    • https://sanipro.ma/app/webroot/uploaderfiles/silipaxisuxosopesotejun.pdfIn PDF document text
    • http://ipllaser.in/uploads/tenozit.pdfIn PDF document text
    • http://namthangbasaltstone.com/uploads/image/files/wolozurabovido.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1615abf95396a7---sesezig.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/zijilusulawexudodo.pdfPDF link annotation
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161486304f045c---63323748907.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615440dc29061---4265348072.pdfIn PDF document text
    • https://quatden.vn/webroot/img/files/tarinitolepubuli.pdfIn PDF document text
    • http://dtyxbpzx.com/filespath/files/20211014181103.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/KGDyd8lM0uI/uplcv?utm_term=who+is+zeus+to+thorPDF 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_off0000f2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFA 10048 bytes
SHA-256: 1414e2d1ae6f5e59abb3c8072c11357b2829f6c55225fc0838bc227b147710d0
font_02_sfnt_off00012191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12191 17228 bytes
SHA-256: dbbf2420cd8615ad921b5228c2d3a8ba6c91ec0dac921aaa9ea21deef31d428f