Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e985fdc629a5c7…

MALICIOUS

PDF

72.5 KB Created: 2021-04-01 03:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a5b2fa50992af6cd79e36d41be7b1dbc SHA-1: 57c9ee267e78735824fd43430a64b5c835d11309 SHA-256: b3e985fdc629a5c7fae130ab18c6ecb678ae8e2e0828a3b5b470ebbf6b7f6b66
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=alpha+m+tailored+results PDF link annotation
    • https://cdn.sqhk.co/kobewudojuvo/2KhhW6Z/capcom_home_arcade_adding_games.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/3gg1giX/xiwutik.pdfIn PDF document text
    • http://muriwilosakud.iblogger.org/whats_a_bad_high_blood_pressure_reading.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/hjiB4gh/44461864967.pdfIn PDF document text
    • https://cdn.sqhk.co/jorawuge/zsifY8Y/vidulovufogewiratumidazub.pdfIn PDF document text
    • https://cdn.sqhk.co/nukusigemug/hihijdt/5111846768.pdfIn PDF document text
    • http://trysoda.club/how_do_u_eat_healthy_and_lose_weightwos1u.pdfIn PDF document text
    • https://cdn.sqhk.co/guzufaseba/kKiggiH/rdr2_homestead_stash_sean.pdfIn PDF document text
    • http://seomagnat1.online/alavani_marathi_kadambari_freese8u8.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/fXXZqXt/10335533363.pdfIn PDF document text
    • https://cdn.sqhk.co/nawamuzimosu/hhjgdqD/button_onclick_event_android.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/idgfCib/26285515595.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/0Kjap69/daily_drop_deals_coupon_code.pdfIn PDF document text
    • http://lorem.space/vampire_diaries_season_1_episode_18_soundtrackihwbl.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/bepukuba/pro_651_programming.pdfIn PDF document text
    • http://nenutufap.epizy.com/vuvopeperoxebivo.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/how_to_go_to_mt_fuji_5th_station_from_tokyo.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/2010_lexus_gx_460_off_road_accessories.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_off0000dbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBA 5188 bytes
SHA-256: d0adb6d5aa5368d95b4b820134198318e1648c5e1f12a9d2f97476d06bb38292
font_01_sfnt_off0000ed2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2D 11640 bytes
SHA-256: b01f85ffe9300840378adfe6843c4fbf0e2fdeea6a02a2081080fd6025baa9ad

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