Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f8b3f27a467c847…

MALICIOUS

PDF

62.6 KB Created: 2021-04-28 00:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9fa43f69fcfedb25a80d012029f8379 SHA-1: 7a667b35a38674555643cb099e5b5852cdf69bbd SHA-256: 9f8b3f27a467c847a27991d72a316f8bd89523dee3b4171019f11e6d5dc7c274
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous URLs hosted on compromised WordPress sites and disposable domains, likely intended to trick users into downloading malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7632

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 http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/dbe1915072935fd4a023c87e89d8831d/filogurofelen.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762af23350f---damuberuvopumajirorunezo.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/d9dbc126869ab9e1c21ee9fe2354565d/43109515020.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/9ric7ppmmmpq7kvega6h4vcu7q/zovedodikotufebagalevete.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16081461e0d109---magejudozenubiferaregu.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887de45e82f---65877126194.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0cfbd46b1---mikusa.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088758d31fab---jefates.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/3195a09465aa2b9a8ce2a2ed444d3bea/duvazakibojefibozefepebi.pdf
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/7b14be20c765fccd63dded18a1a8d1f1/79747100450.pdf
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16082219e886da---bunaxime.pdf
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/jimlvpnp5tbndl23ug044h85ru/bodafunosevidoliguzixum.pdf
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4327b0831---wefakijirixorufukisib.pdf
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/21b00a45124607dac39ef86b9a9ee416/futeve.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072205571b15---67321373424.pdf
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/263492a7575211e7408a4a722210cb2a/41695617912.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=airtel+tv+modified+apk

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