Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e707a92881eddbf…

MALICIOUS

PDF

85.6 KB Created: 2021-07-03 11:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6c566e3f61f5e7b17bcd7e7aba2edd1c SHA-1: a786700d7a792f710026447c23fb31a5123660c8 SHA-256: 4e707a92881eddbfdc7e9f144d3e3801fe8aa8f2c4f77692a4e14e91b56fd3c3
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites for phishing or further exploitation. The file's structure and URL patterns are consistent with a link farm used to distribute malware or facilitate phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808bc84fad2---16820363123.pdf In PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/63819753577.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adee856d541---fuwogalasilaxo.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/noforesa.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/durisaja.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/0dde9e90aa2e2e22bb16313ff4f3e142/wusabubumumemonalozewu.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16075778a7c5d3---12529778635.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/391763bc87efc375e69be7f1877bb43e/fixudas.pdfIn PDF document text
    • http://studioriggio.it/userfiles/files/dumivibogujarog.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711fe713997---68679972965.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16072d2e8a1634---suxofasusigurabupi.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/ed4d74a0ce3ac030a5c29caea61fa8cc/60212042197.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/jafifugakiwovudexiv.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210427215103119.pdfIn PDF document text
    • http://globalnetworks.de/www.galabau-poscher.de/main/preview/ckfinder/userfiles/files/48833854897.pdfIn PDF document text
    • http://grafiport.com/userfiles/file/kosekefob.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/f5adfac2912fb38c8068a6d16e5a9ea5/76855793442.pdfIn PDF document text
    • http://skomi.ru/img/files/file/27099366475.pdfIn PDF document text
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/215a01253a04d8a6c901ad0077640e4b/70988103967.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/79260092510.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/reronifitajobedugakif.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/b18c87506db6457b593eec8faaae1942/dikidazijusigeri.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=what+did+ares+do+in+the+trojan+warPDF 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_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 16452 bytes
SHA-256: 789ea5e3aec8d403498d90f4a4e58fa7c5f88c8d6b74a2f9e44d70e02014af6e
font_01_sfnt_off00011940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11940 10508 bytes
SHA-256: 7a061c77c07b8471d4b6ccb37b5f7c27f9a7513eee23e09b25cb65fbf3040163
font_02_sfnt_off00013122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13122 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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