Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7830fc8087ddf3…

MALICIOUS

PDF

70.6 KB Created: 2021-03-20 12:54:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 348f45774b75d0d04866f9ff683e1243 SHA-1: 7f94fa3cc34943327e25f8b10bb92aaa940a23b9 SHA-256: 5c7830fc8087ddf33d0e110338a0bbc19d2ff6cbe0674ccf30ca637d83114900
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'soxebez.ru', which is likely a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a malicious resource.

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://soxebez.ru/wix?keyword=vizio+e48-c2+wall+mount
    • https://cdn-cms.f-static.net/uploads/4453754/normal_5fd6da2a7bc8f.pdf
    • https://cdn.sqhk.co/rusobotakox/WJia0je/tolugivuvifadutaveluk.pdf
    • http://lugabev.mygamesonline.org/difference_between_dfs_and_bfs_in_artificial_intelligence.pdf
    • https://cdn.sqhk.co/xudadidi/riihfgd/99537131781.pdf
    • https://cdn-cms.f-static.net/uploads/4464068/normal_6045f69dd27fb.pdf
    • https://cdn-cms.f-static.net/uploads/4447079/normal_60334175601d9.pdf
    • https://cdn.sqhk.co/rebamomidaw/hajjgiB/37609491670.pdf
    • https://cdn.sqhk.co/barosevarega/7M7iaZg/defogagirinalopevaz.pdf
    • https://cdn-cms.f-static.net/uploads/4374177/normal_6044d5312fa17.pdf
    • https://cdn.sqhk.co/jasurisunav/5ichhaD/28210397075.pdf
    • https://static.s123-cdn-static.com/uploads/4375504/normal_5ff2d73f612bf.pdf
    • http://vajukadezazi.getenjoyment.net/kobixubij.pdf
    • https://cdn.sqhk.co/jivazufevi/ibKOxHm/zawuwefepaput.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/davubewu/rajasthan_university_b._ed_exam_form_2019.pdf
    • https://s3.amazonaws.com/mizeteb/iomega_storcenter_ix2-_200_configuration_guide.pdf
    • https://uploads.strikinglycdn.com/files/4a49b28d-680e-40ad-938a-a2252946ca15/pdf_preview_handler_download_outlook_2010.pdf
    • https://s3.amazonaws.com/lawakux/6957484081.pdf
    • https://uploads.strikinglycdn.com/files/ca11693c-c7de-4b01-a13b-b3b20b71f970/lexivilujevebod.pdf
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caf4.bin
16b67ab709ec5dc6c306138958698c03c6ba0a6241566345a6a024f1bc997f3c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF4 5104 bytes
font_01_sfnt_off0000dc60.bin
5b4954d036ba6d6ed0871b7f9a83957a3b73dee32bbf199183787ce33c070e54
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC60 10524 bytes
font_02_sfnt_off00010065.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x10065 4324 bytes