Malicious PDF — malware analysis report

Static analysis result for SHA-256 9876f0bdc9563d0e…

MALICIOUS

PDF

82.2 KB Created: 2021-06-09 01:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a4ff667d21f0932c12f1848605bb15a SHA-1: 9b851cadc22a0bfa3c86de96008b9ff90da8155d SHA-256: 9876f0bdc9563d0ef9738d721c236fa35743c48f976e8b27152b203e64abcad6
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 0.9996

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://krisoc.ru/pbw?utm_term=best+app+to+edit+pictures+to+cartoon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4505363/normal_5ff852b695ce2.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4388617/normal_60b53c4e3ff22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421049/normal_6058abfc4d6ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485434/normal_5fffeaf987409.pdfIn PDF document text
    • https://fexifeter.weebly.com/uploads/1/3/4/6/134612515/6122023.pdfIn PDF document text
    • https://powipasime.weebly.com/uploads/1/3/4/7/134725879/9cbee589b7.pdfIn PDF document text
    • https://faxasuxudoxo.weebly.com/uploads/1/3/2/6/132695360/9973709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_6021f8be0e98b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420748/normal_60bfe9972c665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_5fe60a64b3b78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ff1c934206e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428061/normal_5fcf5d1bb0d42.pdfIn PDF document text
    • https://valiveve.weebly.com/uploads/1/3/4/7/134730204/3517217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389366/normal_6029e9c847c6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371023/normal_5ff35ab7910ea.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/96a930ee-ea2c-4638-a33a-08cc6e0d449b/basuzufirij.pdfIn PDF document text
    • http://vafobotigef.pbworks.com/f/narodna_muzika_download_free_mp3.pdfIn PDF document text
    • http://bojirakaj.pbworks.com/w/file/fetch/144750027/what_is_quantum_jumping_reddit.pdfIn PDF document text
    • http://gutupum.pbworks.com/f/how_to_get_a_free_iphone_11_pro_max_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5642476a-415e-4316-ab54-87f249121f60/parts_of_speech_in_english_with_definition_and_examples.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 2856 bytes
SHA-256: 717092d5dd59c8c49ea36c83d21618a51de6d98202d26afd0df3526fbfe5f645
font_01_sfnt_off0000f695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF695 4964 bytes
SHA-256: 0b380d1e26eabfde73fac5c7f52a002279372e02c02278bd5c98641f0df7a115
font_02_sfnt_off0001077b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077B 10848 bytes
SHA-256: ddecc35b8dc2d797cae1bb3674ecea70cfcbf9af6413c69613c8c6efc0636d10
font_03_sfnt_off00012c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C85 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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