Malicious PDF — malware analysis report

Static analysis result for SHA-256 370cfc0e4f06e0c9…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 17:16:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ba1ee2ea9fbe27bd217c946504a36ce SHA-1: 41c94d1d7707c1a06c44b65cbd2e0cf3d0bc05df SHA-256: 370cfc0e4f06e0c97bee57fa081722c571b55f9617c5f0034d087cee05ce06a6
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URI strongly suggests a phishing or credential harvesting attempt.

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://baarspo.ru/wix?keyword=bethel+high+school+ct+football
    • https://cdn-cms.f-static.net/uploads/4388620/normal_600fd5d287f12.pdf
    • https://static.s123-cdn-static.com/uploads/4489969/normal_5fcac9b7dbecc.pdf
    • http://copyright-securityx.com/koketed9fmmc.pdf
    • https://cdn.sqhk.co/pevelefotuve/VMjCE8f/prop_hunt_games_pc_free.pdf
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600b65549f257.pdf
    • https://static.s123-cdn-static.com/uploads/4369911/normal_5ff91ac24af1a.pdf
    • https://cdn-cms.f-static.net/uploads/4455370/normal_601c8969d5dfa.pdf
    • http://heliusdesign.ru/dexibujarexinitft1u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/pulujolatepuv/harris_bitcoin_miner_windows_7.pdf
    • https://s3.amazonaws.com/pasawexawinogad/jurassic_park_3_mobile_ringtone.pdf
    • http://lugirike.epizy.com/event_planning_website_template_free.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_off0000cef7.bin
531a5570003af90d76d03c60dee3863eec4e3fd45f01a27782665fa8968a8b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF7 4916 bytes
font_01_sfnt_off0000dfc4.bin
7083beca1e3971e8eef7bf8344fa5bbe2388676b283c3c929cf0bd2743491e6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC4 10204 bytes
font_02_sfnt_off000102be.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102BE 4324 bytes

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