Malicious PDF — malware analysis report

Static analysis result for SHA-256 db56386bc88e9b4b…

MALICIOUS

PDF

117.5 KB Created: 2021-03-17 11:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbe378121b865fbdc3dd7a7afb5d06c7 SHA-1: 5f4fd1c90ce76192ebeeb800dd022507347794c7 SHA-256: db56386bc88e9b4be80eff3385e659f3ef150310164f8cbb5d73e37b5a5c7890
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detected it as a phishing trojan. The ML classifier also flagged it with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://ponafet.ru/strik?utm_term=journey+to+the+west+characters
    • http://pimifawimonidij.mywebcommunity.org/email_architecture_in_computer_networks.pdf
    • https://static.s123-cdn-static.com/uploads/4368954/normal_5febd03b00b88.pdf
    • https://kitopelok.weebly.com/uploads/1/3/4/3/134355781/453285.pdf
    • https://cdn-cms.f-static.net/uploads/4409998/normal_5fd9fe183c5d2.pdf
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/7889a20c173b8.pdf
    • https://cdn-cms.f-static.net/uploads/4379369/normal_5fd13b2980051.pdf
    • https://cdn.sqhk.co/desiruzag/gijiSji/64360362777.pdf
    • https://cdn-cms.f-static.net/uploads/4368989/normal_60419141cf18f.pdf
    • https://cdn.sqhk.co/pufowuvikij/rhisWkQ/18290505947.pdf
    • https://cdn.sqhk.co/xagogudexo/jeJ5VYL/country_music_radio_stations_in_my_area.pdf
    • https://cdn.sqhk.co/gejixoneku/KbgcteR/hill_climb_racing_highway_game_download.pdf
    • https://buzixigadojaw.weebly.com/uploads/1/3/5/3/135316262/fivepebegogira.pdf
    • https://cdn.sqhk.co/bomemenun/ajhtTjd/football_manager_2016_brazilian_team_names.pdf
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fe56272070bc.pdf
    • http://pusewuvi.medianewsonline.com/bryant_plus_90_secondary_heat_exchanger.pdf
    • https://pakoverixofe.weebly.com/uploads/1/3/4/7/134771358/xexebus.pdf
    • http://pewodebepefawi.scienceontheweb.net/birdland_sheet_music_concert_band.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pezefaxovojole.atwebpages.com/60669985125.pdf
    • http://sanugifop.atwebpages.com/lawenuberosolufifesaja.pdf
    • https://s3.amazonaws.com/mokamoba/lovovafape.pdf
    • http://litorow.myartsonline.com/razor_e200s_scooter.pdf
    • https://s3.amazonaws.com/liguwubore/recurrent_bell_s_palsy_treatment_guidelines.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/how_to_reset_tws_f9_earbuds.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014866.bin
07608e9f1523f62f825920979a841aaa5b7cd6e8cbd7df62a29631fbfe07a333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14866 16980 bytes
font_01_sfnt_off00017e0d.bin
cd8282316fb937e39c9c645702d010d63cf7387145cee1fc32a1c1756bbab58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17E0D 4872 bytes
font_02_sfnt_off00018ea0.bin
9d5bf0431aa793edccf1ab13d6707ad76f8440052e6c210e253e77b9db2e77d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18EA0 14444 bytes
font_03_sfnt_off0001b9e2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9E2 4324 bytes

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