Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29de4aa48184dca…

MALICIOUS

PDF

81.1 KB Created: 2021-05-09 20:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00ee20b6293a05b774162b1d480715d9 SHA-1: 54f137323c9062f7f2f9b73cccd2322cab5c52a5 SHA-256: f29de4aa48184dca9a051dcd953fd8853028e684b13e5e3e0d0c30d075eee376
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to 'https://botokaw.ru/strik?utm_term=personality+plus+test+definitions', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a 'Personality plus test definitions'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=personality+plus+test+definitions
    • http://kismyketio.com/daily_driver_sfc8lji.pdf
    • http://copyrightsupporthelpcenter.com/enron_the_smartest_guys_in_the_room_stream_reddit3952m.pdf
    • http://sowopezamiw.medianewsonline.com/pdf_kambikuttan_home.pdf
    • http://fomuvegikutidob.iblogger.org/54703306834.pdf
    • http://tosezepokonone.iblogger.org/allen_online_test_series_for_neet_2020_syllabus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sopavame.onlinewebshop.net/gozizibulalunutob.pdf
    • https://s3.amazonaws.com/vinejivunitego/shure_ulx_antenna.pdf
    • https://uploads.strikinglycdn.com/files/5b7968b0-0ed2-4e48-bf59-a2f6bc8e57bc/48570791536.pdf
    • https://s3.amazonaws.com/radubozufiwo/whats_wrong_with_my_beats_solo_3.pdf
    • http://nixuverojezuluz.epizy.com/15564681869.pdf
    • http://filikenogax.epizy.com/mujovilokogiwogixasuxim.pdf
    • https://s3.amazonaws.com/tutapaxi/duxopabiwifimog.pdf
    • https://uploads.strikinglycdn.com/files/a21c4be4-2070-4e99-af44-4e833116b579/47946128736.pdf
    • https://uploads.strikinglycdn.com/files/1bed17cf-484e-48c6-bfdd-7833d219f76b/integral_of_mod_cosx-sinx_from_0_to_2pi.pdf
    • https://uploads.strikinglycdn.com/files/6cc1626c-e585-4d1f-b6f6-02a7b87ceb7f/8505938048.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/the_strongest_one_reading_street_activities.pdf
    • https://s3.amazonaws.com/bolovopizonuki/93381158620.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_off0000fecc.bin
2158b64129e67f51f3d58aed9a77635b18f346d7c879126103dacc1d98074943
pdf-font-stream PDF embedded font (sfnt) at offset 0xFECC 5140 bytes
font_01_sfnt_off0001105f.bin
a3535e81342dc39f524439064b54ef7e8659a62588e46d9bf151308a66a91973
pdf-font-stream PDF embedded font (sfnt) at offset 0x1105F 11268 bytes