Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e26440faa7c53c1…

MALICIOUS

PDF

73.5 KB Created: 2021-09-08 01:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3243086f8365f094a751b942a08d0d7f SHA-1: 368829826313bc7d17168459f47f158ad450b8b8 SHA-256: 0e26440faa7c53c18f661ee3dfe40efcc832e56c5a30569daab4601c5e131053
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm, with many URLs pointing to compromised WordPress sites and other disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6688

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://accomplishtheimpossible.com/userfiles_ati/file/nexugesisikobanetubujeped.pdf In PDF document text
    • http://yuilchem.com/userData/board/file/35535210166.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/xukeridivifudomatilo.pdfIn PDF document text
    • http://werkkledingverkoop.nl/images/docman/files/wiviwelamibixuxirubug.pdfIn PDF document text
    • https://nhabe.com.vn/ckfinder/userfiles/files/87230728001.pdfIn PDF document text
    • http://balone.net/_upload/file///xegimukarividotoba.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/d5srfvh586qcm2bh5mn6bqf647/luteferuzevadodibukisov.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/2f8a6026a21462c71324fc6de27f430c/togijuxewe.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/vixezaribivolixedos.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d790497fc8c---wuxafoxosasetojufaganerad.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec7a69d2e5---xanilezevapef.pdfIn PDF document text
    • http://scheidenschiedam.nl/uploads//file/tamamajejezagimuduf.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/45975361571.pdfIn PDF document text
    • http://wardwrightself.com/clients/863644/File/89219073872.pdfIn PDF document text
    • https://mclarenquartz.in/ci/userfiles/files/87786797301.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/feb09bfdc300431d132d4324f203eba9/64721414766.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4075b47ce8---xopinaxixavalidopupekap.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/hklggriimo5agvkse36j6c3as6/fevepusufozibadiwex.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/mavomejo.pdfIn PDF document text
    • http://harryreichert.de/uploaded_pics/News/file/56194208836.pdfIn PDF document text
    • https://alusol-kw.com/ckfinder/userfiles/files/56369217563.pdfIn PDF document text
    • http://likebarcode.com/image/files/20210827_021230.pdfIn PDF document text
    • https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/98573788703.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6125c9d6f---tabegevefirizivepopinef.pdfIn PDF document text
    • https://dascalita.ro/app/webroot/files/userfiles/files/24145917140.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=sq9+mini+dv+camera+manuale+italianoPDF 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_off00010a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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