Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee021725cf6776f…

MALICIOUS

PDF

83.0 KB Created: 2021-09-06 02:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 596f3651bceb17a1297fd1130b7eaf44 SHA-1: 2ca38ec4eec66327287399939e0ceae401de6c35 SHA-256: eee021725cf6776fc9dc1f63ae0adaca89cf20a7c92759bccd70ba466ac88836
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting. Heuristics indicate this is a link farm designed to lure users to external sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5903

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://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a43c04337a1---nenarusizogezer.pdf
    • https://tavio.ru/files/file/jozusasozomogexepad.pdf
    • https://aslimitada.com/userfiles/file/dufesajupezotemudijojukan.pdf
    • https://mimpisiluman.com/contents//files/ralulin.pdf
    • http://szwygs.com/upload/59352288236.pdf
    • https://pianotuningdarwin.com/userfiles/files/doruruworiwitozapezus.pdf
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/470228c88bc549ed22e287d51dd3aff0/1472357948.pdf
    • http://bienbao.net/uploads/files/bemafafedenokupajiz.pdf
    • http://ptaki.info/imgekoprojekty/files/25143212163.pdf
    • http://blackhorsesc.pl/userfiles/file/raxum.pdf
    • https://autotronics.vn/userfiles/file/12062644680.pdf
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/5c1d4eeeb0bbb962dfb36b95284e01c8/35259816955.pdf
    • https://amatnieks.com/pictures/image/zojaj.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc66abe4c1---66968694837.pdf
    • https://tcremich.lu/files/files/51292308367.pdf
    • http://www.jindatunnel.com/up_files/file/24644060390.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609d469568d12---firanatixeluzabak.pdf
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aad6a129be8---28629150664.pdf
    • http://biemmecommerciale.eu/userfiles/files/zonozenejenageropixir.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/0ed082a721da4aa0563fe84dbd30dd9c/xosevotolijumajubina.pdf
    • http://gitishahjahanpur.org/ckfinder/userfiles/files/8557227027.pdf
    • http://mwflower.com/upimagesfile///63565762756.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bb16737f735---80325513268.pdf
    • https://vgi-vn.vn/app/webroot/img/files/demajilepimusitoje.pdf
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607741720544c---43958815360.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=give+and+take+adam+m+grant+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a9b.bin
b71ec83968a2d13352ccf3fd7548ea40cfe8d98f2544ac53270c043ff6377f04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9B 18976 bytes

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