Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f1474054000064…

MALICIOUS

PDF

97.4 KB Created: 2021-09-03 19:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 261cfe554838be45c4e0ceb93c2033fd SHA-1: b4774174a79bef3b5fc1b43636839ac80853a7e9 SHA-256: 59f1474054000064679a41df3e99ab6fa9a97da560ff64c1a2f815dc88c2e336
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 0.2522

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://drtamerturan.com/file/4807049187.pdf In PDF document text
    • http://citescolairedeledit.com/include/file/wuvusowovatowasev.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210628025951_2039271498.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9679524a9---60268522449.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae2e452422---95364929282.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087546ced68b---vidudowojewiwevotubu.pdfIn PDF document text
    • http://fastgood4cheap.com/clients/4890/File/firogiwixekilukowufajitov.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094bb84ded38---foxidisi.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdf53e8f2a---94233068465.pdfIn PDF document text
    • http://xn--42c1dhzaq5aeb.com/userfiles/files/najisaboviwamezi.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119628fa6059---lenozagijowivigatudav.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b16aa70daac---retijijekavajasufabife.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160996aaf8014d---nalox.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c46731267c---roxamujorizomobelumopa.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111faa44172b---787079708.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/11fiev27i0k3vuv234akma94j9/16302863584.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/3401ebd4cded56d4ada1c72874da850c/vojeleserexezelemi.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9ff5465a6---40697387657.pdfIn PDF document text
    • https://leavereview.com/customerinterview/ckfinder/userfiles/files/42066162600.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/fopema.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16131215781957---rorejalixotamifoxotiru.pdfIn PDF document text
    • http://clerus.hu/files/file/56598191763.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/6836146650.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=28+creencias+adventistas+pdf+descargarPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001261a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261A 18936 bytes
SHA-256: 3ef4920b025897a9d89c9b6be51b9419ac93860ee6bf907234ee2d10e5c8048b
font_01_sfnt_off00015786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15786 10924 bytes
SHA-256: 8b14bf24d8cb2914ed37a6ee03c361cbacdcb9cb3ff8810623d812473ddfa3ac
font_02_sfnt_off000170d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1