Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc329f4207216fa1…

MALICIOUS

PDF

123.5 KB Created: 2021-06-21 12:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8af84105bb44749382e3670e1186b8a8 SHA-1: b47076a22db9418faf6e79d88163dc365c1f7aac SHA-256: fc329f4207216fa1c4b7f358f3cf5cb634c27a9c320b967bc5b77adc72182cc9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm hosted on multiple compromised websites, suggesting an attempt to lure users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous URLs pointing to potentially malicious PDF files is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9319

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 https://archism.ru/uplcv?utm_term=free+unity+complete+projects PDF link annotation
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87e54cd4dd---nopovaxavosuvixojajit.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160827bba93216---lakipugi.pdfIn PDF document text
    • http://peusch.lu/userfiles/files/linux.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/15fa98c54f289eac6e658a61dcd9b09a/65498440868.pdfIn PDF document text
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/66250681761.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/5vkicsvb8cnuuc4no0up8b1rcg/nutanaduxegumamusato.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/af1d52122dd230b2031ca13964747827/44299372385.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/7990i30jhktfo1me0kivp3p971/28458451713.pdfIn PDF document text
    • http://cesishotel.com/res/wysiwyg/file/44519300845.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/luxiwabafujesefejovapax.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/9d1e1088cf473583580415866b3b97bd/68867892320.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/81ecca8bf4f975ffa32f5728837bda6e/37546253780.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e57420672---54797846470.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/0377de451627310fb51af4648fe9e567/wixokuxupejituwuvupuw.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f189fda694---90223706998.pdfIn PDF document text

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