Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b59b74c63450193…

MALICIOUS

PDF

70.7 KB Created: 2021-02-20 09:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6b4a3c8aed34fe26d3587907131342e SHA-1: d6dde7ca4fc96bc5c3799572355f243d3818bac8 SHA-256: 0b59b74c63450193f09edc21d4f27503ab7178a740892fe355bc0f96dc8a3b24
96 Risk Score

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, with a specific ClamAV detection name indicating it is a phishing trojan. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of an external URI suggests an attempt to download or redirect the user to a secondary payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=in+patagonia+chatwin+pdf
    • https://cdn-cms.f-static.net/uploads/4456135/normal_60242c3bad1c6.pdf
    • https://zemotoru.weebly.com/uploads/1/3/2/6/132695551/5ef102a576a3.pdf
    • http://trikotoria.ru/33913704832pn7z5.pdf
    • http://shopmzm.site/fumexegojuvamapekrhzbp.pdf
    • http://streamsweets.com/why_is_my_apc_beeping4wyw8.pdf
    • https://rafinavogeseb.weebly.com/uploads/1/3/5/9/135987446/kumej-didakowewasirip.pdf
    • http://raffle.website/bossy_verbs_worksheet_year_2q4vy8.pdf
    • https://cdn-cms.f-static.net/uploads/4478127/normal_6010efba4812d.pdf
    • http://skidki-day.shop/lituxasemifnahl5.pdf
    • https://nudabixe.weebly.com/uploads/1/3/4/5/134505388/judoziguva.pdf
    • http://temilops.xyz/dasonafanevark5lb.pdf
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/murukafa_tapidudubumu_wodaz.pdf
    • https://cdn-cms.f-static.net/uploads/4369663/normal_601455776b21a.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d96e.bin
ff7a1b693253385bb35dbecc950d6d726223e4181571d8bfd8ea7e5f58a5be34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD96E 5140 bytes
font_01_sfnt_off0000eb07.bin
408e3f0f356445146cf55181e8c5e6596df6879e4fdfa281ea445f7596cfc918		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB07 10296 bytes

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