Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96265b9bcafaa7a…

MALICIOUS

PDF

221.5 KB Created: 2021-07-25 20:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ecc8c900de4026a775870f9d8f79d64f SHA-1: 3dbabb9f8bbbdd8bd4984433e9f1aaff088a862b SHA-256: f96265b9bcafaa7a129b182267d6483974c4a3edb5af1ca6d5797d0be0a510df
174 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior, as indicated by ML classification and ClamAV detection. It employs social engineering tactics by presenting a fake download button and luring the user into installing a browser extension or update. Several URLs point to compromised WordPress sites or unknown PDF files, suggesting a potential download or redirection mechanism for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nowyhotelik.pl/userfiles/file/xisujizerefiwef.pdf In PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/gv30h6ps45nhf0fh6ucl4opvr8/25901849904.pdfIn PDF document text
    • http://derma-dts.de/files/file/xebatujezepuvaxawum.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983bfce04a0---tarusepukejaroruwud.pdfIn PDF document text
    • http://mytmbc.org/fckimage/file/zevarazomelelux.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a70aa248682---golinolewelojo.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/55090968480.pdfIn PDF document text
    • http://usmleworkout.com/files/file/26566552860.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/eletfrionpe7i2h8bg81934jqm/nutesatinolulopas.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd1dfe3b9b---bajutomavokegeluxaxason.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5df46d344---vetobi.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/nizatimi.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/sitenifeluriguxugiban.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/f4leubkdt8b6tnbbp0nitdfp4u/12089025288.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/gavumebaxus.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/tujavabisikusam.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608602cfe0514---10609725023.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/sowufivajukititevelup.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160890e2390b58---favobisesonigifav.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160abdcf9d8dce---muvatovisuwo.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/10484317048.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=what+does+notice+of+exclusion+of+confidential+informationPDF 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_off00030780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30780 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00031f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F92 17628 bytes
SHA-256: dfe63f58e31344c91bf2189b9fc4f498fc6d68411842a2381b73ad65a2bffe86
font_02_sfnt_off00034e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E15 10936 bytes
SHA-256: 75ebae1371724b8931e7449421691aef8829307d9fb3a13f4253be206a9102bb

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