Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa843ae5ca778a6a…

MALICIOUS

PDF

76.7 KB Created: 2022-04-13 15:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 2f641176885fa20fc9ba0a479ed28fc0 SHA-1: a7e44f4904b0926a623397c25c82538eae9e2879 SHA-256: aa843ae5ca778a6a14c27d4dc9f7c221fc4b3e4207f5c59273a3e22713c9a73c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://ragaz.co.za/YmrXLWy8?keyword=how%20to%20write%20a%20literary%20analysis%20essay%20conclusion PDF link annotation
    • http://shriramashramssschool.org/userfiles/file/rafaletesibawerifagegamu.pdfIn PDF document text
    • https://sakura-bashi.com/uploads/files/202204111420084240.pdfIn PDF document text
    • https://www.amis-simserhof.fr/kcfinder/upload/files/68532674210.pdfIn PDF document text
    • http://anhhieu.vn/hinhanh/file/norunewemibavigasipo.pdfIn PDF document text
    • https://galatusizafo.weebly.com/uploads/1/3/4/8/134884417/vapalomega-rarexoditumerin-nuwofu-vefumapimuvoz.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/44de5e59d6bd1bf24106761193d9e71e/63514855292.pdfIn PDF document text
    • https://coachhouse.info/assets/file/20012779958.pdfIn PDF document text
    • https://vapulorefemefiz.weebly.com/uploads/1/3/5/9/135956910/fufateweb_sitowub.pdfIn PDF document text
    • http://topflexsports.com/uploads/bonekefezajopotenaze.pdfIn PDF document text
    • http://flixgolf.com/ckeditor/ckfinder/userfiles/files/37437758641.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/41113202078.pdfIn PDF document text
    • https://tradingcall.in/ckfinder/userfiles/files/malor.pdfIn PDF document text
    • https://nivejuva.weebly.com/uploads/1/3/4/7/134713874/xazidenas_wuwuriturugun.pdfIn PDF document text
    • http://nukasandalye.com/app/webroot/kcfinder/upload/files/65968401335.pdfIn PDF document text
    • https://tefovaxosu.weebly.com/uploads/1/3/1/1/131163863/tilotubas.pdfIn PDF document text
    • https://dududizenipurij.weebly.com/uploads/1/3/4/6/134651263/1793075.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/533n2p6j482o7aeb97ajrbl5ob/4650096194.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1622bef43ad11b---fetejit.pdfIn PDF document text
    • https://vujojetusifej.weebly.com/uploads/1/3/1/3/131398487/d61f31396dfd.pdfIn PDF document text
    • https://lugukeku.weebly.com/uploads/1/3/1/4/131407734/4851356.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_off0000c6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FB 17812 bytes
SHA-256: 2b64fcc19f80e279c7c1c2f61e124c2a8f0cd3fbbf97b003768fe7df842670ee
font_01_sfnt_off0000f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFA 10516 bytes
SHA-256: 50585ed661bcfbf5cfee8533047f9c3a827d4f0b61b60b625b47f43ddfc3ebd1

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