Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd21c9b3d07e7c3…

MALICIOUS

PDF

87.7 KB Created: 2021-04-05 03:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80514f7ac04d89e00c52fb4d1f1e9c71 SHA-1: 79f27f9942731729346e108b066fb450239998b8 SHA-256: 0cd21c9b3d07e7c3617b75cbf64aadc7047f10079291ac45ff68fbc6c73bb52d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'seumenha.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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://seumenha.ru/award?keyword=radiologie+du+tube+digestif+pdf
    • https://nuluvefum.weebly.com/uploads/1/3/3/9/133999802/ea61f576a83c.pdf
    • http://maturibcgj.space/xetegunovepawev20zot.pdf
    • https://cdn-cms.f-static.net/uploads/4450354/normal_605caea229334.pdf
    • https://cdn.sqhk.co/meradipuwiz/eQswhbO/rexepilodoganuvinebelezon.pdf
    • http://summer-italy.fun/2093552659f50ch.pdf
    • http://itnegozio.info/satuluwisfqz6.pdf
    • https://static.s123-cdn-static.com/uploads/4403117/normal_6008711b55846.pdf
    • https://cdn-cms.f-static.net/uploads/4417808/normal_6045ef00a79ec.pdf
    • https://salabupomisopef.weebly.com/uploads/1/3/4/6/134631393/4218617.pdf
    • https://static.s123-cdn-static.com/uploads/4472185/normal_5fcb8d683e5e6.pdf
    • https://static.s123-cdn-static.com/uploads/4369914/normal_5ff808c3cfd8c.pdf
    • http://deromgroup.com/why_is_music_important_for_toddlersauu7i.pdf
    • https://cdn.sqhk.co/zisazege/RibBjdK/cine_callao_fallo.pdf
    • https://retizobokeli.weebly.com/uploads/1/3/1/0/131070240/popodusetoz.pdf
    • https://nusuwexob.weebly.com/uploads/1/3/4/3/134352417/lupav.pdf
    • https://leximefowa.weebly.com/uploads/1/3/2/6/132680903/e4a5668d95de.pdf
    • http://shopmzm.site/ctet_sanskrit_question_paper_2019_pdgpke0.pdf
    • http://inertbhjbj.ru/farewell_my_lovely_eb_white_summary07m3w.pdf
    • https://cdn-cms.f-static.net/uploads/4390068/normal_60307a4e27130.pdf
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5ffbb32ac2f55.pdf
    • http://reabook.online/54031783372ajy7a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001010c.bin
1228c7426f21ae1c154a886de9344b8d0eede94bcd5d5a4d87e78030f7f3dba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1010C 5260 bytes
font_01_sfnt_off00011309.bin
d5f8a8e68f51552854b1df1526f1b75ea07456b80675e9ae09b4fab80fc0a870		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11309 12708 bytes
font_02_sfnt_off00013aea.bin
4ef9506ee11a349461550e6b437e3786686b598308a87786035880d16624999d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AEA 16060 bytes

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