Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7a5d10771b8381…

MALICIOUS

PDF

89.2 KB Created: 2021-03-28 21:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a3209c7e8eb6a6ced5a730c64be32c60 SHA-1: b0db8be1a2a86f6bd89aec3f55f7d58cef317e6b SHA-256: db7a5d10771b838131601f49f5d8d03a65b5871b7d0fdeadcfa2e7a828eb8e86
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

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://dugedepap.ru/award?keyword=sikkim+government+almanac+calendar+2020+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447467/normal_6026a462b6a04.pdfIn PDF document text
    • https://cdn.sqhk.co/jawosuzexe/q0jiogS/roblox_get_free_robux_game.pdfIn PDF document text
    • http://nemeloru.66ghz.com/alien_dance_song_mr_jatt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486190/normal_603ac642e4acb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443803/normal_6053cb03878ac.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_5fe65079515cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_602fcdbdac90e.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/neporezofov/older_snapper_riding_mower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3089190a-3da8-40db-b968-ac5da3ad3d88/25706614142.pdfIn PDF document text
    • http://gusepegap.rf.gd/27921876102.pdfIn PDF document text
    • http://suzibebozodumi.epizy.com/wobewijelabizezab.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/free_certificate_design_template_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21e0d840-3246-4c78-bb06-5eeb0230095d/jvc_rx_6000v_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/mini_dvd_player_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/jumofubupezokom.pdfIn PDF document text
    • http://fatesixinubumot.epizy.com/wuloterim.pdfIn PDF document text
    • http://toxukanubevaga.rf.gd/largest_law_firms_in_nj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a92fc842-5553-4eab-b7bd-000b3c8e4125/grade_5_math_practice_workbook.pdfIn PDF document text
    • http://buvodomugefun.rf.gd/76183885891.pdfIn PDF document text
    • http://zefifimagami.epizy.com/94628332397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe6c49cc-823d-4ec4-a4db-9000312f82bd/how_to_reset_my_brother_printer_toner.pdfIn PDF document text
    • http://bifikaximeme.epizy.com/96174513615.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/hasbro_ultimate_bumblebee_transformer_instructions.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_off00011a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9D 5796 bytes
SHA-256: deab6dc25a714d6f74d71cf4ab9aabd6978cc605cfa6c52e473be85016b7bcf8
font_01_sfnt_off00012e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E4D 12528 bytes
SHA-256: 1355e5850f66dbcf537f5b224ca16b255f8ad45213156c5a41676fcf59b2e644

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