Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deab30575fadef1…

MALICIOUS

PDF

79.7 KB Created: 2021-07-30 02:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 24b4977fda0bcc7b6a2f9b554c00a948 SHA-1: 80810563fcc8336250771f690a4d7cf9fde8e009 SHA-256: 0deab30575fadef195863b26aeaa1be774006eb332ef83b5db81e834aea57bb6
154 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised WordPress sites. Heuristics indicate this is a link farm designed to redirect users to potentially malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature, suggesting the links are used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8445

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 https://cructi.ru/uplcv?utm_term=barmer+balotra+patrika+epaper+today PDF link annotation
    • https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/f88a89b71f3e3cae53df885d94211e4c/wawajivitemajaj.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e5024921889289700ebcfb6cbea61794/nutafovabizizepo.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/fivufifededavowobeguv.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/95231834002.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/vboisvqllbnacgm2evshqvrqel/daduwidupuzo.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1e62c9c04---57212874701.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607af95b09df0---nikodorafotukexiruvidorat.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086177c53ce4---97297079876.pdfIn PDF document text
    • https://www.upperhousedev7.com/ckfinder/userfiles/files/63474598705.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/0efd2b8acd85aeb7f5d23e0d8fbfa39e/widuru.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/7ca28decc153aa276ecc96e4cccaee67/98562463808.pdfIn PDF document text
    • https://protectname.xyz/whoisprivacy/userfiles/files/17097452180.pdfIn PDF document text
    • http://studioingegneramato.com/userfiles/files/55315873929.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/7ebd584f87ac2980deafc4db710c794d/3146824725.pdfIn PDF document text
    • http://slanfusa.org/clients/47225/File/27606014518.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/tiegnbjssijpm7f2ddtisqnben/gazuvusufugip.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/bifabolav.pdfIn PDF document text
    • http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/suwixewekefitewabalite.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607906b72c365---tumaroxijilewav.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160863e2801c2c---64171000894.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/a6f95c9fbce58b3d97bf4b28b63f12ac/2889308479.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075dc6d1025b---21234945937.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/o1om1nc6jl8n8qjkcq0k3nl0r2/zusilix.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/14519132028.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7064f044c---84372592507.pdfIn PDF document text
    • 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_off0000fbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD0 18208 bytes
SHA-256: 2e0de6206aa95eb2f59650966e6e02d282c75c21ae258a890fdede545d799b6d