Malicious PDF — malware analysis report

Static analysis result for SHA-256 7573f773636e896f…

MALICIOUS

PDF

78.2 KB Created: 2021-04-29 14:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb6a18f72cb36f49f598af7a9171488 SHA-1: da47102f99efeb00060246235d7438a5c69c8b4c SHA-256: 7573f773636e896f98b86fdb75ee5b1a835cbf489622f092039e20e4acfae922
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. While the document body is heavily obfuscated, the presence of external URIs and the overall detection suggest an attempt to trick the user into visiting a malicious site, possibly related to financial lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=what%2527s+considered+a+stock+market+crash
    • http://gebikomuxe.getenjoyment.net/mubekezovifuxazur.pdf
    • http://timinome.getenjoyment.net/46367293827.pdf
    • http://olymp-trade.top/juruturojixajenznfys.pdf
    • https://wesulabiduzipu.weebly.com/uploads/1/3/4/2/134235649/vuwasixiduni.pdf
    • https://busonuvawariba.weebly.com/uploads/1/3/4/3/134355681/d17ebb42ec1f.pdf
    • http://digitalmicroteter.xyz/32536704126196m7.pdf
    • http://2022god.com/conjunctions_worksheets_with_answers2n0hg.pdf
    • http://sell-toclick.online/colt_woodsman_for_salekgrgp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/982d42c6-2520-4e55-807e-51bdb96627d0/atkins_physical_chemistry_10th_edition_solution_manual.pdf
    • http://pazepoxi.atwebpages.com/how_to_clean_a_white_glass_cooktop.pdf
    • http://fubavinexazixo.onlinewebshop.net/bissell_spotbot_pet_how_to_use.pdf
    • https://uploads.strikinglycdn.com/files/720fdfe5-83d0-438a-9474-be51779e786b/what_are_the_7_deadly_sins_spongebob.pdf
    • https://uploads.strikinglycdn.com/files/dab4f4a6-a53c-4cea-8baa-ef99171938f1/bosch_nexxt_300_series_washer_drain_pump.pdf
    • http://maxezexisog.rf.gd/23390704223.pdf
    • http://nibejodawugizex.rf.gd/89797991065.pdf
    • https://uploads.strikinglycdn.com/files/74dc3ad9-37a9-4add-9827-6a7af3f4507a/honeywell_rth6350d1000_installation_guide.pdf
    • https://s3.amazonaws.com/sisaxu/cambridge_university_hospital_annual_report.pdf
    • http://lawaxisagiwog.atwebpages.com/what_are_the_circuit_symbols.pdf
    • https://s3.amazonaws.com/pewebopufupe/copy_outlook_contacts_into_excel_spreadsheet.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/bojarokenoj.pdf
    • https://s3.amazonaws.com/ganubifirigevi/15321064492.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_off0000f388.bin
ed277be261cc5796a6a94b2b98a7b0f8176b6a459b65d9e7819168ecd5362bb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 5256 bytes
font_01_sfnt_off00010550.bin
1fe30a148d7d4c03a56d9ca8145e186fcde05704747c2f1ea3d3963e80374e6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10550 11164 bytes

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