Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ecf50ee7b937b7e…

MALICIOUS

PDF

67.6 KB Created: 2021-09-25 23:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0733030cbb6f9eb724c314b973996de6 SHA-1: 734d448ca25cf13ea2e3057e453ef8f789ff5331 SHA-256: 5ecf50ee7b937b7ec2a58f9fdc28d3d6e12f8ee51028d22990c52697bdb1cccf
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits characteristics of a phishing lure, employing an image-only design with a click-outward action to redirect users to external URLs. The presence of embedded JavaScript and a high ML classifier score further indicate malicious intent. The numerous links point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161383b2c3034c---puridipe.pdf In PDF document text
    • http://sasnowosielski.com/ckfinder/userfiles/files/xugamuv.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/50293715737.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/xugalitamise.pdfIn PDF document text
    • http://cuacuonnhanh.vn/Images_upload/files/menexowagefuzokupesabipo.pdfIn PDF document text
    • https://abriganature.centralcms.cloud/galeria/files/jonuketa.pdfIn PDF document text
    • https://makenie.com/upload/files/wukorodiki.pdfIn PDF document text
    • http://technimexvn.com/images/ckeditor/files/72795167529.pdfIn PDF document text
    • http://matras-devison.com/upload/file/wapanuzuvaninosid.pdfIn PDF document text
    • http://jljemc.com/upload/files/93115279658.pdfIn PDF document text
    • http://bc-arman.kz/ckfinder/userfiles/files/zobasidevigegaxite.pdfIn PDF document text
    • https://baoyi-chuck.com/ckfinder/userfiles/files/17672502222.pdfIn PDF document text
    • https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/telalixowagi.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4ee009514---gexadapobewuxidegutig.pdfIn PDF document text
    • http://goforthegreengolfpools.com/userfiles/file/tanenefob.pdfIn PDF document text
    • http://nirmalamathachurch.org/cms_uploads/image/file/32432002886.pdfIn PDF document text
    • http://prakseologia.eu/userfiles/file/zoduvekiribo.pdfIn PDF document text
    • http://cpviettin.com/upload/files/54130346467.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/a1cf95e17716dfc5f4d5419b028e6ba3/tigazugidafubiwamikuxaj.pdfIn PDF document text
    • http://www.valaisconsulting.ch/file/mawopemesemuwolenanexed.pdfIn PDF document text
    • http://ikuma-car.com/js/upload/files/sarosutelowozumevi.pdfIn PDF document text
    • http://tomboy2.com/images/library/File/52316742323.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/5478087398.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=toy+story+ppssppPDF 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_off0000b0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B2 9784 bytes
SHA-256: d7acce894fb8fa01fcc94613acd133a92717ef075756501e78c4b51615435a54
font_01_sfnt_off0000c641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC641 13948 bytes
SHA-256: 60f4af45947e7911f04c100b545126b583414539a960f92de0a640b899321434
font_02_sfnt_off0000e910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE910 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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