Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6d01140b6a9315…

MALICIOUS

PDF

70.5 KB Created: 2020-12-29 13:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f59768c3fd725b1fdfdf899f6aa2dd70 SHA-1: ba0062445dbf24758f8804292c0441ee4a59b63c SHA-256: ce6d01140b6a9315fb4f0b5dd7a08ad24e7803efb009a3ab336f4412da0eb921
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document body and heuristics suggest a social engineering lure to install a fake browser update, which is a common method for malware delivery. The embedded URL points to a suspicious domain, likely serving the malicious payload.

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://traffking.ru/123?utm_term=what+does+fyp+mean+in+comments PDF link annotation
    • https://cdn.sqhk.co/kibizatududo/ggdgdgf/brick_game_pro_19._9._0.pdfIn PDF document text
    • https://cdn.sqhk.co/sepufaziru/jcHDidL/68247835476.pdfIn PDF document text
    • https://cdn.sqhk.co/pufojoloz/ghhiibj/zemugejutotinamo.pdfIn PDF document text
    • https://cdn.sqhk.co/duzemata/ifBiebW/91226213750.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/ladojenefe/world_conqueror_4_modern_war.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/free_offline_nlt_bible_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/alexa_sony_android_tv_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/gesopazox.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/camera_shutter_count_software.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/true_caller_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/30864772277.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/cisco_ccna_security_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/convert_to_word_adobe_reader_touch.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_off0000d394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD394 5380 bytes
SHA-256: fd3a851be8a5454cb82de154ee88d59f794117a098ad03bc64a650776674e1ba
font_01_sfnt_off0000e5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DB 12364 bytes
SHA-256: 6865d2990cc8b7d04e3515436e2e71437f442987e02a3c6eec07febe149ac140

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