Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd1db7784408195…

MALICIOUS

PDF

63.7 KB Created: 2021-05-06 21:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fa32514c015467f82fae20eb7a44a09 SHA-1: 6a082160cdbfef8ea2aa301a0c39c5daffb32a6d SHA-256: 7cd1db7784408195142df1dbdc1de7c8db1aa084d378b2de98802d4511877766
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs, many pointing to compromised WordPress installations, suggesting a phishing or malware distribution scheme. The embedded links are designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7290

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://oniceh.ru/uplcv?utm_term=beginner+clarinet+sheet+music+pdf+free
    • https://www.cittadelmiele.it/wp-content/plugins/super-forms/uploads/php/files/a8020ba13715eea3c3d7525b5d597639/82114374432.pdf
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b99727cfbe---tiwigiwexinekaru.pdf
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a8a101ea27---9479118497.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607856e29e9ac---bakijupazibekutexabuwoju.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2202150e5---loperux.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160757ea70554b---16138246045.pdf
    • http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/fvjc4398e0m50fncvai7cc45a0/75930675534.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/7621f18771d771d2972ac049cf2231d6/gowunikiwa.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/qb3oi8bkp2pt4f61t9qb2j6qta/5278936680.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/acc6f2066b5e33aea29542c99391f279/24545242179.pdf
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/8091fa83bd8fc2c35f1cf218748a3b13/55773257229.pdf
    • https://bangprice.combangprice.com/beta/cms_image/file/sagabewopezokawatelaxawu.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/324e4965cd14a23fbb1cffed30da7e33/xokunozesewope.pdf
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807cd9afbd1---43608210277.pdf