Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d5f9ee7c0c40fe…

MALICIOUS

PDF

67.4 KB Created: 2020-12-06 04:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 775bd3e2e89476c11f4a3ff018f6230d SHA-1: de0eb4a4f25e01d00230450b09b6aeffba508e78 SHA-256: 87d5f9ee7c0c40fefec11bec4b4784e47bdeb71ab2e6dd77eea1ed25826e0943
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://traffnew.ru/strik?utm_term=golda+meir+school+enrollment PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471082/normal_5fa6c249822fe.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/xezonijida/telugu_album_songs_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/advanced_excel_2013_tutorial_free.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/20633210103.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/university_of_washington_physics_reu.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/27371879085.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/xapubi.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/86303381910.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/restoro_license_key.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/form_up_on_me_meaning_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/seraka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b405161f8068bed02ab5/t/5fc92ad50ff59e308eb108cf/1607019221622/download_motogp_racing_2019_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/osrs_fishing_guide_fastest.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5c22f3de5e49b55bbdaf/1606376484319/zetelutazerusamezulezoz.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_off0000cac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC3 5212 bytes
SHA-256: f2f9d728f50d5bb1a5e34ef46b90473f4b49cb1571852eddf30f898ad9f5921d
font_01_sfnt_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 10740 bytes
SHA-256: 4cfc502b99e0abba3dc16c7bea2ce1e51d36afd823bf957358e53a4d13007fde

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