Malicious PDF — malware analysis report

Static analysis result for SHA-256 363a55328750ae90…

MALICIOUS

PDF

76.1 KB Created: 2021-03-08 23:53:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1164f1ab0bb402f0307980f98e1fc368 SHA-1: 95dab1c9cebac7bc58df2e49017cb3c601e0788a SHA-256: 363a55328750ae90c8ba748cb50c250034ba758ef62f4e133d4b48789f3ae06c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a game-related query, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of an external URI is a primary indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/wix?keyword=skyrim+the+horn+of+jurgen+windcaller+puzzle PDF link annotation
    • http://sirosin.iblogger.org/cervical_spine_radiculopathy_exercises.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403533/normal_5fe4de26267f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5fe8f7159768e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/cambridge_university_press_catalogue_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/report_stolen_indian_passport.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/wufozawajer.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/canada_lottery_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e752156-c347-4452-8b70-59d8e530e29c/tricaster_460_back_panel.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/cave_kraken_guide_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/master_plan_delhi_2021.pdfIn PDF document text
    • http://nafevozow.rf.gd/83077412474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42ef0d67-f7de-4a4a-a00b-7873aefa204a/what_does_an_it_systems_engineer_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28baa3c6-4440-47dc-9309-2db83256c6da/61125971776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7943949e-fa71-477f-b6b0-b448cab3b046/retro_fridge_mini_black.pdfIn PDF document text
    • http://kexasejuwodeji.epizy.com/wimolimapelusujejefutu.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/school_subjects_exercises_elementary.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/afterlight_2_android_4pda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16e6945-3092-4098-9958-62a9c0a8a4ed/how_to_fix_a_kenmore_washing_machine_that_wont_spin.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/vewut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ccdc22d-14db-4c12-9788-4a81a100a6d3/confirmation_of_service_letter_sample.pdfIn PDF document text
    • http://sinubazafapeni.rf.gd/acrobat_writer_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22547d9d-1522-42cf-9a53-7a4757ec0ffb/tugavuzaxevev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff453489-e435-43bd-b20b-b11cc3f684a0/dijuxujatuvep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72188045-2f80-4a22-ba4e-a160c50054b5/98347317531.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 5876 bytes
SHA-256: 556fa942162ba2557ef24fc971d3f8a27abcf30bb5cd02e3e2081c2bf55eb83d
font_01_sfnt_off00010054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10054 10004 bytes
SHA-256: 7260185a04b11c50e788e779c8d43e920da09e3f27662ed9d867a3445c033a11

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