Malicious PDF — malware analysis report

Static analysis result for SHA-256 47016adf5d79b44b…

MALICIOUS

PDF

80.4 KB Created: 2021-09-14 09:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: aca63826da2595df2e6724c8a4ce2579 SHA-1: 1c71caee3fe28a0b49e0803feafa58daffbd67f9 SHA-256: 47016adf5d79b44b7a2cdabd29283cd27bbdc5afb9ad4dbe21a2f3c907e0f874
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as a PDF document that functions as a link farm, directing users to various URLs hosted on compromised websites. The ClamAV detection indicates it's a phishing trojan. The presence of multiple links on disposable hosting and compromised CMS upload storage suggests an attempt to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2676

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://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/es3rn5a95q4uik0t258a1oso46/66712416753.pdf In PDF document text
    • https://dom4m.de/userfiles/files/xirenusesixubewameduwidu.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/34fi1ttbjekdek2a3mt1anthqd/zabafirizagolexubepodivu.pdfIn PDF document text
    • https://illustrations.noche.fr/images/files/duxikutuseseziwatabo.pdfIn PDF document text
    • https://broadcasthub.com/ci/userfiles/files/88377365526.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c64ad1e527---17299331497.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/tudagatixufuru.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613b9cfe2f76c---ditud.pdfIn PDF document text
    • http://gildiamasterov.ru/userfiles/file/47063320946.pdfIn PDF document text
    • https://simplehome.ro/ckfinder/userfiles/files/91441153566.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/disujakitufigur.pdfIn PDF document text
    • https://quatden.vn/webroot/img/files/pakorirawokoxefuv.pdfIn PDF document text
    • https://anaksemut.com/contents/files/22719908502.pdfIn PDF document text
    • http://basumati.com/app/webroot/ckfinder/userfiles/files/83115453865.pdfIn PDF document text
    • http://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/34375595742.pdfIn PDF document text
    • http://uptownchantilly.com/uploads/files/bitasepox.pdfIn PDF document text
    • http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/raxapatilafufireluxasiluz.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/xusukogepewe.pdfIn PDF document text
    • http://dokumsuzgec.com/userfiles/files/640703042.pdfIn PDF document text
    • http://ghinelliarchitettura.it/userfiles/files/69245027019.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381a9dafeb7---vifibusanerusozaro.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/66449634854.pdfIn PDF document text
    • http://4els.ru/uploads/images/files/66378357163.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/14684769664.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/nojevowumajoworugisug.pdfIn PDF document text
    • https://eventpro-kontraktorpameran.com/uploaded/files/jopatodufadumibeno.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=warcraft+2+movie+download+in+tamilPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE966 10736 bytes
SHA-256: 9997be493d13d9ca1c0a04528f0871d7f5ca53561200c5b4b0ff78a392925db8
font_01_sfnt_off0001022d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1