Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e2296e61a5c93a…

MALICIOUS

PDF

67.8 KB Created: 2021-06-19 13:34:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be1e5cab71e6490c445d8159e8a568ea SHA-1: a362c2234639ab8aecaa4c16427df3468e9b0cb8 SHA-256: 80e2296e61a5c93a47d4294fcc91a7732b9ea362ccb154916b88cb9c406424aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links pointing to potentially compromised websites, suggesting a link farm designed to redirect users to malicious content. ClamAV detected this file as 'Pdf.Phishing.Trojan', and an ML classifier also flagged it as malicious. The presence of embedded URLs and the overall structure indicate an attempt to exploit user trust, likely for phishing or to serve a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8149

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.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/85r4tte3b87om4rapdnp1crgvu/14751420389.pdf
    • http://longarmacademy.net/fckeditor/userfiles/file/lurawuzibopemikigixude.pdf
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160820136bdbd7---kirimubedan.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a74bdc90289.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076a964382e2---repizewadixikarumujusi.pdf
    • https://artasedanasingaraja.com/uploadfck/file/66989282261.pdf
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/b2fd11ad372c83e610b8e8db15e1f96b/88906664191.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c4978c1a54c---6587355976.pdf
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b21cf3317---wujedikakuniwagunugefalug.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58db29f0d0---pefisego.pdf
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/83d78f9f78dc08fe848ae08746dad88f/60407816492.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160783a2b6071c---76834150561.pdf
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607f94b9b5e81---82671381650.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=calculus+for+the+life+sciences+bittinger+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed5f.bin
2c53b04effbdfa26e2fd3cbe0408c8307a8434f7545cfec661bcec8646eca89a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED5F 5464 bytes

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