Malicious PDF — malware analysis report

Static analysis result for SHA-256 370f51774ce6b4da…

MALICIOUS

PDF

60.1 KB Created: 2021-06-03 13:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 59331f8d731d04240195a4e37f16d321 SHA-1: c059824d36f107e671f81c9dd6772192c6aa0f99 SHA-256: 370f51774ce6b4dacb55ba5358c92f23f0ae63af55ef93ad1c7231a9a0c0c520
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains text related to fitting a tow bar on a Nissan Qashqai, suggesting a lure. The PDF contains numerous links, many pointing to compromised WordPress upload directories, with one notable link being http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca7a3d2c02---94410114894.pdf, which is likely the primary distribution point for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 5

  • 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
  • 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://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca7a3d2c02---94410114894.pdf In PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609e2323ea949---vumojadevisofabomipebuzos.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/4gm5ec3ub0rlke08ao7p97flc7/91195798750.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607246bd87d1a---56213966326.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/30008785308.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/5154819767.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/bf894e3a6a016aaf17cbb5b5c4566671/vulubilimiguwakofik.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/122addf21208b216501aa05ec0246827/65153356283.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/a9759c580b2fbfe310b0f87c1b3bd828/kefagewukogafogurubax.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/18f7ad562acbe9b463df828d69ff3c9f/takexenupexofe.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/hps0udf6lb7i8cqvjt4b29l82i/18607652748.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076bdbd1f62a---gediputogafog.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/wazotagibapunivid.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/89ec50dae3af21e1a9249eab19bf3bd4/55100117802.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3cb38ea37---tesevudub.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a65fb4afe79---jurowifetup.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a781ae111---gubesadivonobu.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbe8edebd8---giwodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+fit+tow+bar+on+nissan+qashqaiPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D7 5144 bytes
SHA-256: a6104cfff7bf6567911b7652dde967f49fdd46537b67301ab8fc3216817e5730