Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3164594d51f2cef…

MALICIOUS

PDF

80.9 KB Created: 2021-04-01 12:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57aae036c2ca83fc0134d839bdf68884 SHA-1: 87ed2c517f02138753d2b395e138d07b60e5c74e SHA-256: f3164594d51f2cef6005d8b8844487cea06eb27e0578b41273104a061ecfc157
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URL pointing to 'soxebez.ru', which is likely used to redirect users to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to movie downloads, suggesting a lure for users seeking pirated content.

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://soxebez.ru/123?utm_term=tamilrockers+hollywood+movies+free
    • http://gurebenuzasa.iblogger.org/14207216271.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a7c822b8-40b6-4687-b3f2-456d7f98ae17/54302033178.pdf
    • https://s3.amazonaws.com/wuwabobujasivor/vagababogefuribiluwiridiw.pdf
    • https://uploads.strikinglycdn.com/files/9fe83f6d-0a66-4d56-8ac9-43aad053b288/38272894574.pdf
    • https://uploads.strikinglycdn.com/files/fd2c59c2-8376-47dc-9c27-7c2a77293a98/texaji.pdf
    • https://s3.amazonaws.com/kavifunaruvi/how_to_get_super_flexible_without_stretching.pdf
    • https://s3.amazonaws.com/semuxemakaw/car_colouring_sheets_printable.pdf
    • https://s3.amazonaws.com/tajimipojimo/apollo_twin_mk2_quad_usb.pdf
    • http://temipaz.epizy.com/xigenukejibiwuzelelagaw.pdf
    • https://s3.amazonaws.com/bojafazes/74916379309.pdf
    • https://uploads.strikinglycdn.com/files/bd50537f-652d-4714-b7e5-54e0b6342dec/troy_bilt_lawn_mower_spitting_oil.pdf
    • https://uploads.strikinglycdn.com/files/b2bbd0d8-2f16-47de-ab6a-ebd612bc18cf/nanda_nursing_diagnosis_format.pdf
    • https://uploads.strikinglycdn.com/files/1d63e2cc-7691-43eb-9863-90ab8990bf78/vuterugusojinipuzawag.pdf
    • http://molodetagako.epizy.com/velocity_acceleration_calculating_average_speed_worksheet_answers.pdf
    • https://uploads.strikinglycdn.com/files/976a4512-6758-4eb2-98b8-ee016af008b5/tikajomufa.pdf
    • https://uploads.strikinglycdn.com/files/c67dcc15-1a31-4519-8002-abbedf593c08/99341490500.pdf
    • https://s3.amazonaws.com/sasufufa/oxley_holdings_limited_annual_report_2018.pdf
    • https://uploads.strikinglycdn.com/files/73b6187d-9102-4d91-9b3e-3da4fa7afa55/69738698650.pdf
    • http://xisanekaxutup.epizy.com/zifujowomodomirotipe.pdf
    • https://uploads.strikinglycdn.com/files/882ad6cb-0b85-4625-86bb-2ef44340b17c/diablo_2_lord_of_destruction_patch_1.13_c_download.pdf
    • https://uploads.strikinglycdn.com/files/4b412d2d-b308-4908-95c3-9b3252d3c006/zujikunume.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_off0000fdf0.bin
67b46ec8df5a11aa65a533d9c53c9782c0b8cca6f54799c9560162d45d6b3a02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF0 5528 bytes
font_01_sfnt_off000110b2.bin
9fd773a3a2cb1d9dbf582ac7df19c08b331eb1af644e12eaecc05e8091364b76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110B2 11156 bytes

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