Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc072e647a3b1dcb…

MALICIOUS

PDF

71.8 KB Created: 2021-02-16 06:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fb3882c6a50e397b891abb6bc8ebc79d SHA-1: 224265608defb8d90f6e5c0a81aae458ad4d658b SHA-256: fc072e647a3b1dcbb8ad995f7168165c9aad93cc3e5987c6f13371bce87104dd
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to NCAA banned substances.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=what+are+ncaa+banned+substances PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378386/normal_5ff7873381cb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485451/normal_5fe029d94c851.pdfIn PDF document text
    • http://nubokokepiw.iblogger.org/maryland_advance_directive.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450428/normal_5fd7ea458b236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366321/normal_5fc73a0560bf0.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/hiieias/space_invaders_unblocked_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_6024b6b3c074b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_602908028def8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5fcaf0f18c33f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5fce18698a560.pdfIn PDF document text
    • https://cdn.sqhk.co/duziketopefi/chhdhgM/list_of_all_lee_brice_songs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485828/normal_5fd64b29ca2ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424692/normal_5fe80d172c0ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477164/normal_5ff1337372815.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nebovorem.epizy.com/dexezabevejopoter.pdfIn PDF document text
    • http://merapuw.epizy.com/dietary_guidelines_meaning_in_telugu.pdfIn PDF document text
    • http://pesafitibum.epizy.com/ioi_properties_group_berhad_annual_report_2017.pdfIn PDF document text
    • http://bamemuwibe.epizy.com/69688741886.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_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 5148 bytes
SHA-256: 1cde3213a7a594267594c34af23e47ed9c9dce1ea382b11105b08f4bdb290603
font_01_sfnt_off0000ed2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2A 10952 bytes
SHA-256: d74e89f6b02a9c62d1be4b72fbd919838dc1129fb0ac1b99ef6b5d2192fc3601

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