Malicious PDF — malware analysis report

Static analysis result for SHA-256 788e86a3656a9239…

MALICIOUS

PDF

79.1 KB Created: 2021-03-14 23:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28c2cb3015b55d17a0935bc128106285 SHA-1: 2b23b744898f71fa3de81ce790e551d6c7f65f62 SHA-256: 788e86a3656a92397b823615f3135fda6058dcbfee0babc2e400dec2acd63518
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to appliance repair, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://seumenha.ru/strik?utm_term=how+to+open+kitchenaid+trash+compactor
    • http://ruwozapezorirar.iblogger.org/liribizivorexudivola.pdf
    • http://zosujobitusup.iblogger.org/the_jungle_primary_source_analysis_worksheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/194ce3ec-99fb-4204-a643-1ab3886fe951/are_doctors_still_doing_home_visits.pdf
    • http://vuzudaru.epizy.com/business_cards_mockup.pdf
    • https://uploads.strikinglycdn.com/files/6a374588-793f-4e1a-86c9-0bf3b0f0e67f/canon_lide_220_manual_mac.pdf
    • https://s3.amazonaws.com/sazixipame/catalogo_esselunga_2013.pdf
    • https://uploads.strikinglycdn.com/files/7299b2dc-255c-49e4-8a59-08e609379186/vokedozelevipekugojinev.pdf
    • https://s3.amazonaws.com/gateme/agri_market_app.pdf
    • https://s3.amazonaws.com/davolazupivowi/google_data_studio_conditional_formatting.pdf
    • http://satuzexo.epizy.com/79981046287.pdf
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_907cfc1930be4542b0ce143c6d20d641.pdf?index=true
    • https://9b56c271-8e60-4ff0-96d1-8930f8c082f8.filesusr.com/ugd/5a1ab0_83e36624ebce4764843549ec83ee7813.pdf?index=true
    • https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_83f87562d9954f239a7dc17dd2391bea.pdf?index=true
    • http://nofugodevi.rf.gd/how_to_use_playstation_move_motion_controller.pdf
    • https://uploads.strikinglycdn.com/files/652af2a7-3932-4d06-b457-7688f64dc961/fewebajogu.pdf
    • http://datidogebe.epizy.com/97884927621.pdf
    • https://uploads.strikinglycdn.com/files/67ffa8fd-8aa3-4c43-8344-36b8bac1d9d2/what_does_dapple_grey_mare_patronus_mean.pdf
    • http://jagakemiwowinig.epizy.com/how_to_install_d_link_dir_655_router_firmware_update.pdf
    • https://uploads.strikinglycdn.com/files/937e3df5-03f3-46f7-9669-e9ad0636ffec/9504999235.pdf
    • https://s3.amazonaws.com/nilititonawafim/1183579702.pdf
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_c4b1d6d0552f41fa925511268e4479c3.pdf?index=true
    • https://2dcb0092-dd22-4cef-90c1-8c398f802bb7.filesusr.com/ugd/ff3115_6f521359ac004260bd4a328de0417c25.pdf?index=true
    • http://bonatufumujipad.epizy.com/arithmetic_sequence_worksheet_8th_grade.pdf
    • https://uploads.strikinglycdn.com/files/408d4706-85fe-4362-ae98-b8edb41f3c9c/rosozadobojovefu.pdf
    • http://roxutudutupit.epizy.com/aplikasi_twitter_lite_apk.pdf
    • https://s3.amazonaws.com/jevelel/big_green_egg_beef_short_ribs_recipe.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_off0000f78f.bin
fc0e5ef941d2e036a4b25127674d11d28e6c4e75cfe49e4590bf667598797092		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF78F 5400 bytes
font_01_sfnt_off000109ce.bin
1f1e9e8a57afff27b5bc99cb0e842d6dfec3df16916d9aabb6745773d56abba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109CE 10668 bytes

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