Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae394073cee6979…

MALICIOUS

PDF

63.7 KB Created: 2021-05-12 17:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aa710cdf04f66b2cd13ccc2037d2cb1 SHA-1: 53b529a1465b042f1cee81c0ef8a3fb236fdbf76 SHA-256: 7ae394073cee6979ba7897d0123dbc1e7f7ee34225e0e6cc8f01e6f67c40779d
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature. The document body is heavily obfuscated and does not provide clear instructions, but the presence of multiple compromised upload URLs is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8847

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://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/dg8r1jaqifig084e6c78295a9a/80223356790.pdf
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f31355535---74946950737.pdf
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/tnag5kgl7leqac93pb3v9rvick/fidorozegobizuru.pdf
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/363187f35a61b4b51b725ff3ee3cf735/bufexogapiwefine.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/833a694a3c334052349a890329626293/zagetamimedotufagukanapi.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160885634c24dc---bagabevuxufurex.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/cf800933649ccfc609c0313dc878b72a/javafajakivekokudefi.pdf
    • https://karinbentum.nl/uploads/file/76582024717.pdf
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1608532b51e025---sosinozajisi.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/18aea9b76c2e6cda7eb7e1f8a0703028/74861208456.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/l74p1d4hnp7e921jrmdiupv36j/xamodiwebanopokerufut.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/79f4e8b590a4919abc4d992b67d18b6e/wukolanubivedurusina.pdf
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/prdscjs5mk4p1s5lc8jm8g4ubm/46677353081.pdf
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/303e143a517e067f7aa3a164ffc18acb/lubejafalozojo.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091276865ada---fokebax.pdf
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160759fefedd3d---zizapizisujigoses.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/ghc5ahu9umu5adtn4k09m5b249/rarowapepejomareweminam.pdf
    • https://bamfieldrental.com/userfiles/file/64630223620.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=doodle+god+guide+flower
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6e3.bin
39019c3f71d7125f28f7c9fd3c2c0b764e1ebf2aa6c642fb2ea8e361dda7d856		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E3 4472 bytes
font_01_sfnt_off0000d63e.bin
66ca0bd2272f11357304a0bffd37b2f9001ffc55aeb27e559e0441ff536ec121		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD63E 9744 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.