Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea5453a5e238129…

MALICIOUS

PDF

77.7 KB Created: 2021-02-18 12:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad91d97421e56a1a764bcfe8b004700d SHA-1: 2d6921118b519c4f486795c310f8e47ebe83cff8 SHA-256: 7ea5453a5e2381299aa4300431cbdd6828562e43214ec81a898568f091b23e49
96 Risk Score

Malware Insights

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

The PDF file contains a URL that is flagged as malicious and is presented within the document body under the guise of a search query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a primary indicator of compromise.

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://crophysi.ru/strik?utm_term=5+love+languages+acts+of+service+meaning
    • https://static.s123-cdn-static.com/uploads/4422879/normal_5ffe7194dc7df.pdf
    • https://cdn-cms.f-static.net/uploads/4414678/normal_60134e1f83870.pdf
    • https://cdn-cms.f-static.net/uploads/4411483/normal_601b2fc68e979.pdf
    • http://vandify.com/bintang_kehidupan_setia_bandk04ed.pdf
    • http://cleaner360.shop/check_your_aviation_english_freevdusu.pdf
    • http://wejnpowk.space/35842170551xc9mn.pdf
    • https://cdn.sqhk.co/midipijikami/FDjgMZJ/anti_submarine_warfare_school.pdf
    • http://gunepevoxop.66ghz.com/wututulaxoluxoruja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fejakixoweka/71806642905.pdf
    • https://s3.amazonaws.com/tikoweravisixu/spelling_for_grade_3_worksheet.pdf
    • https://s3.amazonaws.com/pululusodogi/muxadudazakakudo.pdf
    • http://kikameruvof.epizy.com/partial_balance_sheet_accounts_receivable.pdf
    • https://s3.amazonaws.com/ziwuvijevo/nufugegazig.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f12d.bin
e9e9b9632584a9428019bad87625811bcae988aca79e7dc109844e285b6e5c4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF12D 5288 bytes
font_01_sfnt_off00010327.bin
edf177c01bc337293d4a6c7a1dc94c2370f12001022487c6e53f3bc352dffc65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10327 10900 bytes

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