Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fe282727c88ada…

MALICIOUS

PDF

74.2 KB Created: 2021-02-27 04:42:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ee6016af3908fdf46d34e6bfb6282b5 SHA-1: 92880cb8761169b68acb74f0f6080cf4e81fd6bc SHA-256: 87fe282727c88ada239b6c62a76a3c3cdc2ed6143674c46f1d9cc77aa9ed1fd5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used to host a phishing page or distribute further malware. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URI strongly suggests a phishing or credential harvesting attempt.

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://botokaw.ru/wix?keyword=legends+club+twins+stadium
    • https://kibepujuvug.weebly.com/uploads/1/3/4/6/134644113/vixofupotizawolo.pdf
    • http://mozovurezet.iblogger.org/kavobutoni.pdf
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/89386a.pdf
    • http://peroruse.iblogger.org/atualizar_google_chrome_apk.pdf
    • http://dixurujisefumet.22web.org/manual_handling_risk_assessment_template_doc.pdf
    • https://cdn-cms.f-static.net/uploads/4479904/normal_5fd165e9451ce.pdf
    • http://womumonafip.22web.org/annotated_turing.pdf
    • https://tovamegudisolos.weebly.com/uploads/1/3/1/4/131411857/4dc3f0a24586a.pdf
    • http://kusadelopo.iblogger.org/sifinusaxu.pdf
    • https://cdn-cms.f-static.net/uploads/4406208/normal_5fe79451059ee.pdf
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/1849637.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gorevifero.epizy.com/scientific_method_experiments_for_high_school_students.pdf
    • http://tapeperogu.rf.gd/how_to_access_wd_my_cloud_ex2_ultra_remotely.pdf
    • http://fasevebozumip.rf.gd/blizzard_launcher_stuck.pdf
    • https://s3.amazonaws.com/benuka/video_er_ultimate_chrome_free.pdf
    • http://jojomuge.epizy.com/blender_3d_animation_apk.pdf
    • http://xegikaxobowo.epizy.com/feature_comforts_oil_filled_radiator_heater_manual.pdf
    • http://xedaxabefax.rf.gd/heat_moldable_plastic_sheets_black.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_off0000e6a1.bin
7c616db0cbff366d09476ae8b9dd6b1e334cebf84b9199915860c8ca62b10e0f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A1 5336 bytes
font_01_sfnt_off0000f8d2.bin
4d30a0ec0f78ced3493bdbb6efd6809427ebb60173b6b980ead2e3bfcece4e98
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 10340 bytes