Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb83dd3f6eda7d3d…

MALICIOUS

PDF

72.8 KB Created: 2021-12-09 17:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: aa5e4a0b55028c4d17c782c2b0c92862 SHA-1: 06ea7af66f141a535395ed434418b589b36edf48 SHA-256: cb83dd3f6eda7d3df94a46c720280412624d2fd57fec2dd1d926fe326e22d1a6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://eminentland.com/admin/userfiles/files/fizened.pdf In PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ruka9tvfjf5iikgovh3n7qdnns/tagedujowiposa.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161aabd31a8842---32337298907.pdfIn PDF document text
    • http://mtcongnghiepxanh.com/upload/fckimagesfile/28200822641.pdfIn PDF document text
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/2857695221.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/fotomisubomapozujuguku.pdfIn PDF document text
    • http://salkim.com/userfiles/file/totezoxevofozil.pdfIn PDF document text
    • https://bisleriwheel.genefied.co/ckfinder/userfiles/files/50718185860.pdfIn PDF document text
    • https://calienglish.com/ckfinder/images_store/files/minagawalimupegep.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613d6b249607b---97388486751.pdfIn PDF document text
    • https://pastelbuilders.com/userfiles/file/41715268649.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97539174263.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/13889395161.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/161af7dce17f72---pafaradavanaxuveruvu.pdfIn PDF document text
    • http://odesignlab.ru/admin/ckfinder/userfiles/files/38914174519.pdfIn PDF document text
    • http://mail49.imgwill.com/editor/images/file/7701_20211204170930.pdfIn PDF document text
    • http://cloudinfo01.smartevolve.com/images/ckeditor/files/32395330028.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a596792cd4---dugorazoronefavipimibitu.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210921170446.pdfIn PDF document text
    • http://amdind.com/userfiles/file/88057166105.pdfIn PDF document text
    • https://opsclown.it/ckfinder/userfiles/files/piwasobegokidemexawilo.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/20960520770.pdfIn PDF document text
    • https://pinkrali.com/calisma2/files/uploads/penulunolozeb.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/702a1eeb3808e52179d035f5efc5e81c/90871172910.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=que+hacemos+con+estos+musicos+marcos+witt+pdf+gratisPDF 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 extracted file (font_00_sfnt_off0000afbc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000afbc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBC 11268 bytes
SHA-256: 1079d5d5e36ac392e796d46e1c9690fa721200a2bd5b20d5c335fb46aa375df2
font_01_sfnt_off0000c9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F6 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 20124 bytes
SHA-256: 19fe3711381bee22af0fd47fa49e03f43759be7c7c8540dda499da3ddbcf8ff2