Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e505da0a00a3dbf…

MALICIOUS

PDF

81.1 KB Created: 2021-06-29 20:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 09ece02468a5c73a854e213de677576b SHA-1: ec1682b735879f53f8df9aca31ce3a95096901f7 SHA-256: 1e505da0a00a3dbf3d534cef760a9b548094d8fb17075d7fe9138092a562132f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content. The presence of multiple external URIs and link farm heuristics indicates an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 http://alternatifmedikal.com/img/userfiles/files/wopanisenidopazodevapogu.pdf In PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/8acafefb4d8b5e3fdfd1e9f5f5ca7743/fejukodipizu.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/4330d6b3fcfc2298ca9e82e660998088/siwekafozodifogoto.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607b375b5cf51---datubirijoximitusesopiril.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a111aacda0e---80043633240.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4f178017f6---80359866090.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/7fae2a3f3460726de8aef5aea3ea7033/69706949858.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160995813e28c1---favusivaviwunigemalasezi.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/bofaluperopebifulof.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/ditunowolakosepof.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/7d9f0286aedf2006339d9b9d242ff086/3465018707.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/a54ad7a612d348d24fea73166ed6c2eb/42249030678.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/70829031004.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0a88d9395.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/73701745437.pdfIn PDF document text
    • https://euforbiabulgaria.com/uploads/pages/files/tased.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/netekutukenu.pdfIn PDF document text
    • https://monyetmesum.com/contents//files/55058640356.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/f583436ce8ab04524400f2b7cd76661b/45538248009.pdfIn PDF document text
    • https://smithsgame.com/calisma2/files/uploads/92346315803.pdfIn PDF document text
    • http://jubileejec.com/userfiles/files/rizurubabidewuzel.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/b1b948cf2610a4e9bb185e13819987a7/wijuleralakotofeb.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/gg3dl1dui7i63egl9s4p3h6rvi/fosafejefegebarime.pdfIn PDF document text
    • http://eros-arena-reutlingen.de/eros/userfiles/file/4246223404.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/4eafa32e1f45cfe836316dc75fa92a31/65949716702.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=excursions+in+modern+mathematics+9th+edition+answer+keyPDF 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_off0000d9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 11232 bytes
SHA-256: 5332c2a08cca04b3cdc8894c81b9a919c29de6d49035872eb1a9793d750636fb
font_02_sfnt_off00010c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5A 16456 bytes
SHA-256: 96b6a808c55b263ee16dd90aac0a908cefef407723e19a964f2c587d58901607

Open this report in the interactive analyzer, or submit your own file for analysis.