Malicious PDF — malware analysis report

Static analysis result for SHA-256 180617e01f47d73e…

MALICIOUS

PDF

87.2 KB Created: 2021-08-21 22:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-24
MD5: 2bcccba72ff2be8277cb1b1d3c5be405 SHA-1: 8c0706c51ab743ec04ce1d43086d03b612084c2e SHA-256: 180617e01f47d73e789f4c12094afaa11c30bbea7183e16d7e278b92473fe9d5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2934

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://repare-ton-smartphone.com/userfiles/file/37924425618.pdf In PDF document text
    • http://cerrutistudio.eu/userfiles/files/sejuxuvefinijuxebiz.pdfIn PDF document text
    • http://beachhigh65.com/clients/879402/File/budonelakaguk.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/76e923791596da68f6212b80b5b2e58e/8387782947.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/c31875a94700b88e50776e5c13822e44/fumibupinetup.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d9d5d4f95c---94251024456.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210505073002.pdfIn PDF document text
    • http://exoticland.bg/upload/files/files/xutezemetafapigojowotife.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/k8nrfs5mm6vc7jnt477923f0qa/53019367949.pdfIn PDF document text
    • http://thephinhmienbac.com/upload/files/kegir.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd2ad110661---muwetifajizerikajafa.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160af9fad49b78---46058249593.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/40729741030.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/3e3da53770a1d75dce31cdc3bc78ce85/63766509576.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/1039e733ba47beadfaf1a4e8fa3a060b/68797819433.pdfIn PDF document text
    • http://tao123.me/pro_pic/files/puvabobivosigozuregiv.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a01f18c3da0---solawezusax.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609f28960d365---69586467435.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/37139923520.pdfIn PDF document text
    • http://africareview.in/userfiles/file/50639864642.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/fadegu.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/sujuk.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a04eff2ce93---galusox.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/31406961787.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a858f54d127---sefemupisabuwakodu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=tratamiento+para+quistes+de+entamoeba+coli+pdfPDF 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_off00010c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C91 17936 bytes
SHA-256: 3eb6e2daa5df26105ac8b5ce3e646fc100c9a1a4f9ae8f99ce30d0a43b24b58a
font_01_sfnt_off00013a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1