Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2e5784ac665f8b…

MALICIOUS

PDF

72.9 KB Created: 2021-03-22 00:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d66f845234e4a099aafcef83de966135 SHA-1: 10cab486072066285b88c14d36cd5dd2e8eccfe5 SHA-256: dc2e5784ac665f8b3591fd1cb1fffb9044d9ff69ec0e8218c48dd2d64bd2f0e8
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a LOLBin command-execution lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/123?utm_term=listening+answer+sheet+british+council+pdf PDF link annotation
    • https://cdn.sqhk.co/ganinidunop/hhihghG/sports_live_tv_hd_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/2bwTZgd/brocade_switch_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/bhjjgLm/magic_words_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/gUhAjdA/54687723755.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/479832e5-2e90-42aa-90b4-6abad7d8cfbc/rezuxabokijopokifolo.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/21767902553.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/rifubimuvonusitokedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a547a774-e47f-4d29-97da-4d29daaf5d78/30811689445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3725112-4297-43ad-8fad-ab0863170b23/somaxujagotisojesawejuv.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/how_to_draw_a_fox_furry_character.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55202ff6-7d28-4153-ad83-4f591d60de06/14454372257.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/introductory_econometrics_a_modern_approach_7th_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb0b7e4c-8c6b-4883-aeb4-21c3650999fd/72603124115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e94994-4573-4cf3-9c18-2c76dbb2ec65/how_to_connect_post_office_broadband.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d65d1ba-f1b6-48db-9682-dfaf91d7eb3a/mewuru.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/android_adaptive_icon_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c355ea9-f6f0-46d3-beb0-9f088dbeca5a/how_to_change_router_password_using_cmd.pdfIn PDF document text
    • http://gamemogap.epizy.com/15538517811.pdfIn macro / runtime command snippet
    • https://s3.amazonaws.com/lomogas/80992646620.pdfIn PDF document text
    • http://wepexivir.epizy.com/77579429354.pdfIn macro / runtime command snippet
    • https://s3.amazonaws.com/jotizifime/19893714634.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/840c55c9-6c7b-47ca-8b59-050b8ee72d02/can_you_have_a_curved_line_of_best_fit.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/40066931307.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_off0000dd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD65 5592 bytes
SHA-256: 17b396fb56f7eed61ed925ec00362f8c6c075201fb76aed99b95214b48885920
font_01_sfnt_off0000f078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF078 10932 bytes
SHA-256: eec0a6aec9c5bdaba6299dafdd5a86547037635a1abe3a8d766252f261558544

Open this report in the interactive analyzer, or submit your own file for analysis.