Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0058b45adb3a77…

MALICIOUS

PDF

69.0 KB Created: 2020-12-15 03:11:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: da2cb43eec780dc00ea254c0ab645647 SHA-1: 92064812eb699b6472327ec2f855537dfd7fee76 SHA-256: 8c0058b45adb3a77a6ee6a5a4ab0ac69a7665fee4c504c57f88d4fd542afbb95
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://traffset.ru/123?utm_term=moonlight+sonata+sheet+music+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473388/normal_5fc2091a9178f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417664/normal_5fa701239dd07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f978318b30a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490950/normal_5fd7f8c092189.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/5fbfb2312cf09257bd651d14/t/5fcfc894b246a03091ed152c/1607452829158/best_scope_sensitivity_for_pubg_mobile_emulator.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/build_my_life_housefires_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60dd5c07-fbd3-40c5-bb56-f5ccecc4279d/60523595597.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce8a62ced31f7f80d2c584/t/5fd1bd17ce71ee580faa306c/1607580952576/fc_bayern_munich_kit_dream_league_soccer_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2953ad26ff1194f7e808d/t/5fc5ea5da97599144ec5a7de/1606806109545/aztec_warrior_shields.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eab716f6d44b07bedc8b/t/5fc3ab9b3f75b166434498ef/1606658978890/fazagi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1b8947f0db06af83c13b/1606228875819/72524990027.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2d4f52cf09257bd788e5f/t/5fc4d8cf3c02f22b9da524c6/1606736079915/lulimegovevujobuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28050be5-f484-432a-8b4b-0ba4e6a7512d/29624550583.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/97859652355.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_off0000cd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD79 5568 bytes
SHA-256: a912f7545e317bf9bd9084ede669f4606eff13da862dd3267ffc47c0a2e63fcc
font_01_sfnt_off0000e06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06B 11796 bytes
SHA-256: a310bcf26b830a7c038ba851fd48c5b8a19b2cf549f2f26e9bccadf583d45138

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