Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7972e941a23a7b…

MALICIOUS

PDF

69.6 KB Created: 2021-03-23 13:27:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8c608b780415ce808f9866d278159911 SHA-1: 9da799bbd3d7d3998b7e1edf195a307941936331 SHA-256: 0e7972e941a23a7b6fc7ad8cc0b3744da7e8bd162aafce842040b8063df3f5a6
104 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 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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/award?keyword=adjective+ending+with+ed+and+ing+exercise+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454179/normal_5feff320c52de.pdfIn PDF document text
    • http://im-marceting.site/d_funchess_injury_reportjvypz.pdfIn PDF document text
    • http://agent-ritual495.online/19979979576538s9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_6029b51b2a8fa.pdfIn PDF document text
    • http://meetchat.space/essential_university_physics_vol._i_ii3rd_editiont5pav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_60499315572bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fab88ded-2f12-46c9-b6ec-f290036286cc.filesusr.com/ugd/cce69c_c22b5aa318004561b38be54977953859.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f055eeca-8647-480d-b67a-5d48d8dc5f7e/74880705697.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/49207956876.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/noma_snow_thrower_parts.pdfIn PDF document text
    • http://niburevukezuxa.epizy.com/21031114170.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/antisosyal_kiilik_bozukluu.pdfIn PDF document text
    • http://molutuganum.epizy.com/vampire_diaries_script_season_1_episode_5.pdfIn PDF document text
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_b599b6f45655480c9177e7a6f6553c60.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca8bdf9f-8e31-4d20-94da-ecec7b045e3d/digital_clock_template_worksheet.pdfIn PDF document text
    • https://4fbc56e1-d9a2-4996-be1d-38f9cd263936.filesusr.com/ugd/b1afee_b802afaddcc84adb903c10fc6280f532.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_f609277f12694a8e8624af96bb44dfa5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/thermo_scientific_lindberg_blue_m_water_bath.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_ca8c93d79af94b27986f27b0f999d77f.pdf?index=trueIn PDF document text
    • http://dedamedasobime.epizy.com/caruso_song_sheet_music.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_off0000cfa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA9 5668 bytes
SHA-256: 49fed33b5e40a1cda7d769d57451d775a40114e3d79406e96370df2528c009f7
font_01_sfnt_off0000e313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE313 11416 bytes
SHA-256: c7070bae03766cb7102be102c75d337ae0af7a24e2a4ef689f82a80813539581

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