Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d653e886227e12…

MALICIOUS

PDF

80.6 KB Created: 2021-03-22 19:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ec3414d01274bd75f428744653b80536 SHA-1: 40c5df5f7db5def27216d6104f49ef2c58ee7dd4 SHA-256: f4d653e886227e124c0ec9d99efb01ca4be5185535629f8bfc74c599d5e725c7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'xezojetit.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to online shopping, aligning with phishing tactics.

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://xezojetit.ru/aws?utm_term=how+to+shop+on+facebook+marketplace+2020 PDF link annotation
    • https://cdn.sqhk.co/noviraxat/903hih3/tilumawevowomidog.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/bigvONH/72721225598.pdfIn PDF document text
    • http://testrun.ru/formalits_cession_de_parts_socit_civile5rx6u.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/ZHbhfie/35864095701.pdfIn PDF document text
    • http://muldwych.com/mushroom_level_stardewpsmsc.pdfIn PDF document text
    • https://cdn.sqhk.co/gotirawuz/EfFjf7Q/get_free_skins_and_pets_in_among_us.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/1jhdhf3/hd_wallpaper_iphone_12_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/revogonesox/ifchhx2/can_u_escape_horror_4.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/5iQijbh/sulawikozegu.pdfIn PDF document text
    • http://wdd13.ru/dell_optiplex_755_small_form_factor_power_supplyus7z0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/06926be2-c0d8-45a9-b242-78d2bae6360b/themes_in_maus_volume_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f0b143-1c6f-43d6-8df2-dc91a821c2c3/how_much_does_army_reserves_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/47715204135.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/11659509521.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07ceb8f-a049-404e-957e-a5ae6af2fa70/firesawidakide.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/media_player_classic_para_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/intensive_agriculture_area_programme.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/how_to_turn_off_the_alarm_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5da92db-24b6-43a8-bd27-1dd079cef8fd/2009_vw_rabbit_transmission_fluid_change.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/gobilitojate.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/chamatkar_movie_300mb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9fd88f-a92b-4e67-94c5-bd0758fd8c25/ketajofejiwofetol.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/medios_de_comunicacion_formal_en_una_empresa.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/integrated_reporting_acca_p3.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_off0000fc00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC00 5788 bytes
SHA-256: f63323caa36c4e44f788da724b52b2272fd45cb81df7808c469414c835950fc3
font_01_sfnt_off00010f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F96 10804 bytes
SHA-256: f2268ec717947015308d164bdea3b71faf7e7955cbec6885df24b71806343e07

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