Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d995c2f0ad9769…

MALICIOUS

PDF

74.0 KB Created: 2021-07-27 05:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c1019f01c17a8d9e944e2967f3c82760 SHA-1: e713300833bd3cae0c5d1fc35ad3777433da638b SHA-256: 95d995c2f0ad9769e1bd13acc71862e30aec9406add0642d24d3ab9787e61f1c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. Heuristics indicate this is a link farm, likely intended to lure users to malicious content or phishing pages. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, possibly involving credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9355

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://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf3090183d---7052260172.pdf In PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16090039f735f0---74214481627.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/86295071818.pdfIn PDF document text
    • https://mfdesign.hu/files/file/33404113095.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/79533986157.pdfIn PDF document text
    • http://samnakthodrahassob.com/userfiles/file/xuribanu.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/u75j8l7qcjge34tselj2rd3aa3/maradifati.pdfIn PDF document text
    • https://magatek.com/documents/file/12243073112.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/40952841209.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/69956033836.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/5122073258.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ee227eabd---mabirilolemo.pdfIn PDF document text
    • http://iccarrentals.com/files/file/30564341608.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607245c193e9f---mapox.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/80616263470.pdfIn PDF document text
    • https://tecnomatec.cl/upload/file/13791197530.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/fofetibujuno.pdfIn PDF document text
    • http://abpaluso.com/upload/file/sekigabodusafikokel.pdfIn PDF document text
    • https://vietfun.com.vn/wp-content/plugins/super-forms/uploads/php/files/24cpto1ail991981hu14uo316i/wuwefajopesimiruneg.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a663a14a996---zifotujidobef.pdfIn PDF document text
    • http://red-persimmons.com/upfiles/editor/files/51241757252.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/78990513457.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6cac83d7a---mesubivaxa.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bb642713e---73942069413.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c76af186f8---topiwit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=fake+verizon+wireless+block+text+messagesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84C 17452 bytes
SHA-256: 19f02255f0a41cdd839aff32aa383763770c35c9e42df2629acd8a6264382408