Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29032bc88586741…

MALICIOUS

PDF

51.7 KB Created: 2021-05-27 03:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 742ffa83819e84490d24233866308eac SHA-1: bde4695808c4e5ba8c78a0c9c731a79991fd8e59 SHA-256: a29032bc88586741b75cf61d6c6be5e054540f5982c04b6c713bf029f872d792
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users. The presence of 'utm_term' parameters and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a phishing or malware distribution campaign. No scripts were extracted, but the overall structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6925

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://irlanc.ru/uplcv?utm_term=maestria+del+amor+pdf+gratis
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160878532d4dc7---12732812871.pdf
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086f566a25af---78572021661.pdf
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/5242b5a586ab5754ce45a44900c0b05a/zakeno.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6724147b38---periwamujotow.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16074a8c15059e---pufelurozomubudazezowiru.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073568b8c1db---sokomojab.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffc2c9ccb2---63459121659.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/2gik594272bio8umit5c397qku/nagopubonomubopalozobujoz.pdf
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1608102e7f042d---vogemesevinapeponibimaw.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/977b8676c3bc21703eb8e250d2cee9b8/kimilefomed.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089c693e97d4---pinusijotijibetanitarejir.pdf
    • http://meble-tk.pl/userfiles/file/selavajipinawusaji.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f34994c5a2---20192192737.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608605318f656---ribazetopekadak.pdf
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/923c674fc7a52cd7d11f0103d7f9948e/jisafujevekomadagizibu.pdf

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