Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b3205dece9bf622…

MALICIOUS

PDF

70.7 KB Created: 2021-07-24 16:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 63a2ba6980d0a77bd3dfcb9b4ee51b33 SHA-1: f36022898f936601e71e3edfe9703b283a2f2f6b SHA-256: 5b3205dece9bf6220b654db364274a52bc9df0aaba1a6a4927d4c2d41feaa5ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised WordPress sites, suggesting it's designed to lead users to malicious content. The document body is heavily obfuscated and unreadable, providing no further context on its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8414

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://chaitraglaze.com/uploads/xeninanenapodupegobogo.pdf In PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/406d3258d0e1ebe28cb77329e5740d5a/lemitasekimonutuzenakivi.pdfIn PDF document text
    • http://songiadabinhphuoc.com/upload/ck/files/48565488387.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/fe7871483d9a28e0eb93368c7c68a9fa/26436932682.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c8766dfd5---nirarali.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/ffe4af78a64f64683c916d885a82c399/letavalavagasowubixete.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/tikojamikexukugurofitu.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/kuwolosa.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/13024169794.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/petixotuxabofum.pdfIn PDF document text
    • http://world-spa-resorts.com/dok/rozaw.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/62615028632.pdfIn PDF document text
    • http://cuuhoatudong.com/upload/files/zewubiseselowinuboziw.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/lizadawesa.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0a937456f---mapaluwasavawafapakafuga.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765781ac465---24034772679.pdfIn PDF document text
    • http://berbun.com/user_img/file/juwefasufig.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sigadowomisunowosuvi.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/b9a7fd04ba0b6601dcc1565e408aadeb/gijamidebe.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084e219cf074---46486283674.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/26136679025.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/rulow.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bde01c5141---43330913435.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=simcity+4+commercial+zone+tipsPDF 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_off0000f6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F4 10864 bytes
SHA-256: c12ac0269521865a7723bec7c70226b5742c2ee37d7e505885e0f1877fb4602f

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