Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fbc14e857ed3832…

MALICIOUS

PDF

50.6 KB Created: 2021-04-05 02:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3f0f3191e3f2dab6565ddfedf9a300ec SHA-1: eea96c4d8ea058bb8dbb7988dabba36470da4068 SHA-256: 8fbc14e857ed383242239669d17e9772f6be748a280332864d2372f57079e29b
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, embedding numerous URLs that lead to external content, with at least one identified as a malicious redirector. The document's content, though seemingly benign, is a lure to encourage users to click on these embedded links. The presence of a malicious redirector and the sheer volume of links suggest an intent to direct users to potentially harmful sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9372

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://yafferge.ru/aws?utm_term=what+language+is+the+original+bible+in In PDF document text
    • http://jegepev.22web.org/46403142914.pdfIn PDF document text
    • http://datulosuwila.iblogger.org/nomao_camera_app_for_iphone_free.pdfIn PDF document text
    • http://vewosanexifusip.22web.org/what_is_secondary_data_analysis_in_sociology_quizlet.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/NijhiCF/first_birthday_templates_free.pdfIn PDF document text
    • http://leduxebawini.22web.org/skype_for_desktop_version.pdfIn PDF document text
    • https://cdn.sqhk.co/bemememu/ath59je/dig_deep_volleyball_tryout_results.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/ighadji/construction_management_jobs_colorado_springs.pdfIn PDF document text
    • http://limibulat.epizy.com/useful_business_english_phrases.pdfIn PDF document text
    • http://joratunezawaxa.epizy.com/19998201328.pdfIn PDF document text
    • http://narural.rf.gd/keto_menu_plan.pdfIn PDF document text
    • https://bc3ee532-4344-4262-9f0b-d8353e2229a5.filesusr.com/ugd/6ca3f6_c1ff5eb07e8c412ea37f7710a58831c5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/25958535846.pdfIn PDF document text
    • http://xipitidip.epizy.com/avengers_dnd_5e.pdfIn PDF document text
    • https://99442e0c-e188-470f-b1e9-a2082f9e7f28.filesusr.com/ugd/2274a7_8e7b8782ae484ec1981faa2e457709d7.pdf?index=trueIn PDF document text
    • https://8d9f32f1-468a-4e6e-8fd0-236262902e57.filesusr.com/ugd/28860c_59d7d499557d421187a08d2df31db1ce.pdf?index=trueIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_036e7ace650a4aedbb7204fa4bedc9cd.pdf?index=trueIn PDF document text
    • https://a1359116-1358-4cde-afc5-3600b4bb50db.filesusr.com/ugd/3b0c81_70a9c506332445d095f4f7638ad7bc51.pdf?index=trueIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_74c864d3f10f4050863eafcdae20b88e.pdf?index=trueIn PDF document text
    • http://tazumigaxizezov.epizy.com/siguxazipelib.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/auditor_report_mean.pdfIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_12f17f8d1c2041cb8af8ab04ff2907d7.pdf?index=trueIn PDF document text

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