Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24890bcefe5f09d…

MALICIOUS

PDF

73.8 KB Created: 2021-02-28 09:14:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b89abda3666e332a5f62af4acbbd2235 SHA-1: 4ecf4ea35c2d7bdde3b0675ef17d9a17996b7169 SHA-256: e24890bcefe5f09d905cef744e9411d90c38be3b815de57e31e468d2c6b6de2d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of multiple unknown reputation URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=dermot+murphy+bob+geldof PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472185/normal_6016fd7a53796.pdfIn PDF document text
    • http://6gusevshop.website/how_to_unlock_door_maytag_washervvgqy.pdfIn PDF document text
    • https://cdn.sqhk.co/xixewebirike/hjgchgH/micro_battle_server_ip_premiumsuz.pdfIn PDF document text
    • http://fragcups.com/31386842800rquxq.pdfIn PDF document text
    • https://cdn.sqhk.co/zesozote/eKvhbxn/best_to_do_list_app_microsoft.pdfIn PDF document text
    • http://sexedate69.site/simuxvg2ip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426944/normal_5fd8edc1494af.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/FidTfjh/exodus_like_father_like_son_shirt.pdfIn PDF document text
    • http://teasmall.space/quiz_planet_game_on_facebook0mtbq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389616/normal_60307ca48e913.pdfIn PDF document text
    • https://cdn.sqhk.co/lonuxonemor/gdjiujh/78303449197.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/lekezaru/infographic_template_illustrator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/61898819658.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/wowopasivonasavawu.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/66130773459.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/photoshop_wedding_invitation_template_free.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_off0000e34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34F 5308 bytes
SHA-256: 730559bc5c1a34090cbe3d009bda7b952787aa5fcba51b7742e5b69058ee72ba
font_01_sfnt_off0000f53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53E 10480 bytes
SHA-256: ef52a10f5d2b80c935748c74aeacb6f74f3d0c988fbf1fe0ae97470033130196