Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cf62d65c20e6f9…

MALICIOUS

PDF

50.3 KB Created: 2021-03-23 01:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 62fc0701602aae92a95c1cd1ea436e3e SHA-1: e46549ddd60412e0c1d57ca0111849d0d5787b91 SHA-256: 84cf62d65c20e6f9aaf77ffdfc1a20853f6c880d944b7ba41df5036f9004eff2
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6165

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=password+protect+pdf+document+adobe+reader+xi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497110/normal_5fcbf79ed670c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470692/normal_5fce0a0d6eef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393189/normal_601f65da1efb0.pdfIn PDF document text
    • https://kilazazemuvazu.weebly.com/uploads/1/3/1/4/131452741/dokenixe_goboroler_vakela_wurix.pdfIn PDF document text
    • http://ilkertr.shop/business_english_dictionarylw5f4.pdfIn PDF document text
    • http://rezltml.xyz/bhalukpong_weather_reportk0t2d.pdfIn PDF document text
    • http://pepujolajerikur.66ghz.com/twin_cotton_fitted_sheet_only.pdfIn PDF document text
    • https://kinijenu.weebly.com/uploads/1/3/4/6/134641264/2574321.pdfIn PDF document text
    • http://dkmz2.club/is_fox_available_on_dish_networkignug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487888/normal_602c8ea8ea000.pdfIn PDF document text
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    • http://italia-doc.fun/pulsar_ns160_image0pky7.pdfIn PDF document text
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/5740089.pdfIn PDF document text
    • http://fuwenosod.iblogger.org/vietnam_visa_on_arrival_entry_exit_form.pdfIn PDF document text
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    • https://lodikesilir.weebly.com/uploads/1/3/4/8/134868057/1365245.pdfIn PDF document text
    • https://b5f169ef-6bcf-4d19-a24b-32bdc9dd7a5f.filesusr.com/ugd/2e79a6_3330557f88da4bf298fa0e26df01d5cc.pdf?index=trueIn PDF document text
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    • http://jovagerebof.rf.gd/introduction_to_mathematical_thinking_book.pdfIn PDF document text
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_27f2900001e44b4fa338eaef82efefef.pdf?index=trueIn PDF document text
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