Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7dcb52ff68c3878…

MALICIOUS

PDF

52.1 KB Created: 2021-04-27 15:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2beeb8258ec1e079d24dbd7fcf2e817 SHA-1: cd907faec904fd9d2dc022d9abbf1e6603215701 SHA-256: e7dcb52ff68c3878198316a10716661d3c68ef91631a8de58bab07448ad6dad3
184 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 0.9220

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
  • 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.
  • 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://dugedepap.ru/strik?utm_term=tantric+secrets+ethan+vorly PDF link annotation
    • https://puviguwa.weebly.com/uploads/1/3/0/7/130776677/f79b77.pdfIn PDF document text
    • https://joxetoxuluf.weebly.com/uploads/1/3/4/3/134391367/sowosujiwobeza_wufipowuxatugu_lunufosazuja_jezotuzafopova.pdfIn PDF document text
    • http://nuxelafim.iblogger.org/yield_strength_of_mild_steel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5fe6deddaf56a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480736/normal_605b6729d9e7a.pdfIn PDF document text
    • https://lobumemimakagom.weebly.com/uploads/1/3/3/9/133999871/4895250.pdfIn PDF document text
    • http://rivabitipo.22web.org/concepts_of_c_programming.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471711/normal_5fe0407ebbbc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_601f46094696f.pdfIn PDF document text
    • https://nogurutofuxuj.weebly.com/uploads/1/3/4/5/134525281/4ef54615703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_6069735fc3d2a.pdfIn PDF document text
    • https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_1321062da7504eaf9c67e8ac3b7b0a5f.pdf?index=trueIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_44154c28c5fb42068c05121b80b5e81f.pdf?index=trueIn PDF document text
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_ff05eabd16f34549a1236fd5b60b690a.pdf?index=trueIn PDF document text
    • http://mejesikiwabez.epizy.com/bimakepazawovibawokunikax.pdfIn PDF document text
    • https://9fbaa0db-fe9e-443e-b503-3d02ea494c21.filesusr.com/ugd/d417e9_fe0b2334930c4dec892d06543e882811.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f15c1f65-6ad6-46bd-b398-cf47e2ece0c1/american_red_cross_blood_drive_manager.pdfIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_633eb5cf37444bff97c1520f8fd14449.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/41af0c38-1e45-430d-822f-ac524d74b8b7/25625143299.pdfIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_56864be25e044671a925352748398ed1.pdf?index=trueIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_f400755356884433ba7d0c068cbea5ec.pdf?index=trueIn PDF document text
    • http://xetubuvij.rf.gd/how_to_replace_a_sump_pump.pdfIn PDF document text

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