Malicious PDF — malware analysis report

Static analysis result for SHA-256 615ecb73d4e380be…

MALICIOUS

PDF

175.6 KB Created: 2021-03-16 16:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2d7c40830e2115f4bdbbeb4b98886519 SHA-1: 2360ca8f9ad8e4121c6e7c3e05c0547ab03e8599 SHA-256: 615ecb73d4e380bee4c68c038cdbe5cb2dc7c9bf88db76008db8863fc0b4cb7c
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 0.9995

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
  • 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://kuzutuzo.ru/wix?keyword=noel+elementary+school+staff PDF link annotation
    • http://ing-cliente.com/rinetudowefatonusewofefu7di54.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/ghjUUWt/sujakokow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387573/normal_5ffc8ca15c9cf.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/EwhhgcC/mosaxexegemizaw.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/hfyhmgf/pro_piano_magic_tiles_pop_songs_2_ios.pdfIn PDF document text
    • http://modernstyle.pro/how_to_play_blackbird_on_guitar_justin7crvi.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/uhjwjhb/vitotepegupegimarebemen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469863/normal_6001458052d66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/indesign_real_estate_brochure_templates.pdfIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_50857675c83448c09c553a96ecd16ddb.pdf?index=trueIn PDF document text
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_54c72f112e514564a6f9cc4f81c44658.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/rulogojabexujixi.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/81061274989.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/72273729954.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/nujizuxidojaxata.pdfIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_c7126726660e4862ac4b0eb9fa2a3e77.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/theory_of_justice_john_rawls_upsc.pdfIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_fa52ba948b4c4f88b2db6bdc02b17f69.pdf?index=trueIn PDF document text
    • https://314f4944-3dd9-45af-b5ee-fc7f46c963e4.filesusr.com/ugd/73cb9e_58e96ca279e94d35b5514575c91adbc7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pujinit/11873385940.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/69145264803.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/55063350620.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_off000279db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x279DB 5192 bytes
SHA-256: 5fc0f3f96bee8b58099a67018ca74d7b1ad1894db425cf04c3e61f1f63fb39fe
font_01_sfnt_off00028b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28B65 11116 bytes
SHA-256: 53c8b7628f6cb378279c702900f698ae8b05733d800747c1ca2bbf710c9d0b85

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