Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e9e95d1eae79bc…

MALICIOUS

PDF

64.8 KB Created: 2021-09-01 01:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5f1941af282befe25efb0d26f54a7239 SHA-1: 0e2cac32499ed7b3318e2ef64fbba320f6342c02 SHA-256: c5e9e95d1eae79bcbfa86eb56b2498e7068bf89bb1c691c009b8fb3bf207b0ce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the structure suggests it's designed to lure users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7082

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://evpltravel.com/xv_image/file/3083434926.pdf In PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/mujojiponav.pdfIn PDF document text
    • http://indianspringhomes.com/userfiles/files/75674529143.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/bd73afcd90f60610cb5830fe2fb01db1/witifoludofobuvowejo.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968eb872db3---33726013261.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/gupetirawebexok.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763bd3de8e4---wepubu.pdfIn PDF document text
    • http://debsluxe.com/clients/1/17/174397649ed9f07baa8f9d9f48c72a4d/File/noxupigine.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb5ce59c66---74944377332.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/a52fe6ebdd81f41a27b5ddcac2e96300/juxegofulagifijivo.pdfIn PDF document text
    • https://cemb.ca/upload/editor/file/38500909106.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/xajifefivujesulenegowazu.pdfIn PDF document text
    • http://labsshop.com/d/files/89999347993.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160999ff079837---vivuzupekeligipimu.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/zanozojipifakolenewuroza.pdfIn PDF document text
    • https://qfse.co/images/uploaded_files/ckfinder/files/1626767934_b43bb370d1.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20216394478123.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/o0h1j8dkuhfm1sh4a20v7hs6i1/ninofavijelimumipibubez.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/opk6todbdsr2fl8ludvh4k9atf/45517764906.pdfIn PDF document text
    • http://kd-council.com/upfile/files/16030563671.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/23711218769.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/26400210513.pdfIn PDF document text
    • https://budgetparking.ca/admin/uploads/file/86292916644.pdfIn PDF document text
    • http://neonatal-surgery.ru/userfiles/files/45584674780.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=what+is+a+replat+of+propertyPDF 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_off0000d485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD485 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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