Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6008a132491c8f5…

MALICIOUS

PDF

76.5 KB Created: 2021-03-14 12:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ce2a3837e1cde4ac242839ae8dc0c0f6 SHA-1: b195b6841e8e7359693e9a7108bbdb164f82ec50 SHA-256: f6008a132491c8f5c32602acaecf74880dd0cf083438afa81ba42ee6eef90279
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an external URI pointing to a URL that mimics a search result, likely to trick users into downloading further malicious content. No scripts were extracted, but the PDF structure and embedded URLs suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/award?keyword=nursing+care+plan+of+jaundice+pdf PDF link annotation
    • https://cdn.sqhk.co/kugugofawaz/jeggjc6/unseen_for_facebook_chrome_web_store.pdfIn PDF document text
    • https://cdn.sqhk.co/zebekufalafi/TXRhcge/neurofibromatosis_tipo_1_diagnostico.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_604cca683ba69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_5fd622434e833.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/BkBidps/zeriv.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/rjfMgfJ/zanipo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408711/normal_6009a2867d728.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496001/normal_5fee7828cc77f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392651/normal_5ffe7b914fd96.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/LSeoii4/pirate_craft_activities_eyfs.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/iigc4ic/garujevativ.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487424/normal_5fd15e7f4bd2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448330/normal_5fd62b82476e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_6047ea07d017c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_6042c38bab698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_5fd14541d3c88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462036/normal_601c897e6af3b.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/tokudapele/warhammer_40k_books_where_to_start.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/dead_island_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/lithium_ion_battery_basics.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/caldera_forms_submit_button.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_off0000ed8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8B 5368 bytes
SHA-256: 88ee835ac09d296cfa3be9f877f681a66e5c35b18fefa7695c57f31535417cd8
font_01_sfnt_off0000ffe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE8 10624 bytes
SHA-256: 476c2abbb823dc57186a180ed4ec6c43ed899ef8108584d16faea38c074e1536

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