Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9b9b81b6cc8cd3…

MALICIOUS

PDF

63.8 KB Created: 2021-05-07 03:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: babcd00f707edf69e9b42e446f2a4de6 SHA-1: 1d599350a3342370bc000da28d9fd6c45a420a28 SHA-256: fd9b9b81b6cc8cd322c877c04a0c6f99ca7f84cd13edaef6881245a6267a6550
154 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, specifically phishing or malware distribution. The presence of embedded URLs and the nature of the heuristics point towards an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7605

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://garglob.ru/uplcv?utm_term=battlerite+heroes+guide
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/755983705d60167dbc290ef124d7e046/63634832166.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b8fa12451---79990503740.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608145ad53942---28167215311.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf2eb0a67c---zesabutijibiwofaj.pdf
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077846b820e6---zurapawenewexokepomutakux.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/scc8ab9mlvq2d8odemk5nctjfo/62364694601.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094855996ca4---29498866989.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/vefepogivoru.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2c35ab140---76959118931.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb8bef9fc---61787168460.pdf
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073ca484fe59---92005647237.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607356c17513f---nutenobanejis.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/a8fb3e2cee69bc773269540b98a5cbd7/tadizevasexawiw.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/5233e6c307b6f5ff24fe3643ca3e2443/88056376016.pdf
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f43e073ced---76113616480.pdf
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd7445c521---18034190427.pdf
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa75d5d9ea---jatibivipaxobinuw.pdf

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