Malicious PDF — malware analysis report

Static analysis result for SHA-256 8305dcde87cf9732…

MALICIOUS

PDF

75.1 KB Created: 2021-03-08 07:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8447851f7c6d47b4686594d0a4d3258c SHA-1: 94473c65fcbed46ac8b64537d19240a2f5db8078 SHA-256: 8305dcde87cf9732c98d8f6f3139a8e5fe99dc5c0b538de08427ebb1c4d38cc0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://leonvi.ru/wix?keyword=usd+264+to+sgd PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5ff166da0a59e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368956/normal_5fe5b2b8a51a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461201/normal_6004bf9841988.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_6000a8b125be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412900/normal_602be766ae46c.pdfIn PDF document text
    • https://cdn.sqhk.co/wufaluvete/N1hjpgi/dragon_village_website.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501479/normal_60299ad99161a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499341/normal_603ffc8a26351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_60310436a4f18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421352/normal_600e9dd453858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469630/normal_602e858da4e47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385862/normal_602b8a9ac53ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_60132fd18329e.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hep6Bhi/47178828231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_6040516b10233.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456676/normal_5ff18041ce5af.pdfIn PDF document text
    • https://cdn.sqhk.co/rebosuvut/ghQL5JI/63314954065.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/qyie6lh/43759430917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391013/normal_603a60f3ae236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474192/normal_603c61ef1353c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d046f68-4767-4f41-bdc7-4f8d771cc59e/why_does_my_asus_monitor_says_hdmi_no_signal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5953924f-efdb-4633-a726-095044cf0c72/frigidaire_dehumidifier_50_pint_with_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64299b55-6f60-43aa-acb6-5683e7b1f25d/41430911720.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0E 5020 bytes
SHA-256: e620f8d556efe97198a538029105b24c4b8c6faa146ca2f2e5a7a8cc4783e186
font_01_sfnt_off0000fb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4C 10544 bytes
SHA-256: 00b60d354512716b85c8ac3918f72d076e00c6db06c19c8947b0657575645eb5

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