Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ca9be8e731130e…

MALICIOUS

PDF

63.4 KB Created: 2020-12-02 17:56:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 68a8e42660636d01376ec624e8dda6c3 SHA-1: d967a2487fb09ac1d8addc1f5abb423284c9777e SHA-256: c3ca9be8e731130e8fccab21740e4c8981668252a525cde74006bc10f28d464e
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 0.9998

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://traffine.ru/123?utm_term=ark+snow+owl+saddle+blueprint PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369928/normal_5f8e274646b14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5fc2705dad042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8cca041ec46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_5f97a0be08234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5f9202611a236.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc36ff3c6d9645836323309/t/5fc5e74a9ee0f32b871fbf10/1606805323246/aveeno_pure_renewal_shampoo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/nccn_guidelines_bladder_cancer_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/88048044678.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1448ef7301f8b1097bc/t/5fc1651118e72e5fdb0be3af/1606509842815/fatulolulo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cc6dc14dfd36fef0f123/t/5fc2c32d9d79364840e8c8b7/1606599470868/jojuxegufo.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/aquaria_game_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a934a879396864138857/t/5fc71096a038a451bce4cb84/1606881430895/ara_pacis_museum_rome.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c92c11f6a41984a72880/t/5fc6ec3b93ad1a48120d0063/1606872123440/toddler_words_that_start_with_the_letter_g.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/ajax_champions_league_1995_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/greece_guide_civ_5.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe08c6f81c9a2a0c6944ab/1606289607003/25263772433.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_off0000bbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBCA 5236 bytes
SHA-256: d8f40565dacdda931c04a7a96ef1536c6a7f10f1f350f956e98d40748a034a32
font_01_sfnt_off0000cdb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB8 10192 bytes
SHA-256: 63135670f7589b6f762055073bd9355dac114c3c41df79625af254afbc39015c

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