Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ee765fee4c852a…

MALICIOUS

PDF

70.8 KB Created: 2020-11-14 12:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 04eb56382b53d535f8da1ddcae8e9cb0 SHA-1: d1c7af4016e87c56e36ea5c466d0928ff3d147b9 SHA-256: 20ee765fee4c852a701d35dde19c3ca6dacf74cd5e955099de066b0d91e099f9
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 0.9967

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://trafffi.ru/123?utm_term=talking+tom+apk+mod+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5fa1702b73925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f8919cbb9f19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1182758e-3c45-4fd4-8e7d-97400aedad32/99572606238.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/21987910698.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/35400901796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2b0ce8f-e29e-4b45-8d49-090fa9009e7b/debopixafaramaref.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/zepilesikonilefediluseno.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/7038138571.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/49510036717.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3B 4740 bytes
SHA-256: 45ecea7d0cad6e8d473d454c4f3b4d82d76ae454ead31698a009c51d840d3957
font_01_sfnt_off0000de3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3F 9956 bytes
SHA-256: ef226c3e811b11f1bd6836300b6d4439f95f3a4de1307c67afd20b3df7456b17
font_02_sfnt_off00010073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10073 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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