Malicious PDF — malware analysis report

Static analysis result for SHA-256 07114d28ac3a636b…

MALICIOUS

PDF

236.0 KB Created: 2021-06-27 13:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 6b7e84297eefa37bfccfb0ea0c648fdf SHA-1: 087d75afff61a529bf48e6f289b50fb28a1a519a SHA-256: 07114d28ac3a636bc43a76d0130e5a0cf99eec651dd8d0d84eae352baaa02f1c
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier. It contains links to compromised WordPress upload storage, suggesting it's part of a phishing campaign. The document also includes a lure instructing users to copy and paste content into a command-line context, likely to execute a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

Heuristics 7

  • 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 lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • 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://camile.vn/wp-content/plugins/super-forms/uploads/php/files/51c8cpm6l6kbag91kh04akm6rc/375058900.pdf In PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/5d134bd65c8ecd0d07e59d0cc6615710/88146495858.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/841a3dec20831bf0cda20d9ce0dc6913/71089735645.pdfIn PDF document text
    • https://publicbridge.pl/userfiles/file/52081947192.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/49092369543.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/eebc44ba972697b9cb911a02ee4c6498/33168558581.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/h5no78j3h8bgma1pjqc8dlg9e1/luxoruniduko.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/94bcfcd73bf5c88e624a4a945b1196dc/mimamaf.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bcc2c8360a2---65865828797.pdfIn PDF document text
    • http://highlandhighclassof1962.com/clients/c/c3/c330a44b04b080977bf299ea430a317d/File/zepemiw.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33a8cbdac7---vikakuperuratovutu.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/bajataxesoleba.pdfIn PDF document text
    • https://songhong-thudo.com/img/files/51130912641.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/90d0f1dd9fc5e9e94970904fbf12aef5/49227469386.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a18a9916409---mulaxadokadavevud.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbdafdedf8---ridekiro.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/83298a8607becc8a6f290b667fdfa7da/57887546626.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/6ab769367c50269f291e4540c359621e/53992458265.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a2daabcd0---fazola.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab85be6e8d2---kivubegigoxi.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/bosekudopamemutuge.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add1b4dc73a---66053083578.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/1031443df286220acfd6f2e27b24d6f9/vodosawotoladoganowogugu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=secondary+math+2+module+2+structures+of+expressions+2.5+answersPDF 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_off0003381b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3381B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0003502d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3502D 20080 bytes
SHA-256: 9d94ce3bff002415f3a5b47a851fdabea064cb6c1f207fbed36ec45fafbe3dab
font_02_sfnt_off0003859f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3859F 11680 bytes
SHA-256: 70bf17c4baf038a820fc8f1b40a4e9191ad6da30268db39513e5b1f7f1d4cef7