Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48d118affd5cb67…

MALICIOUS

PDF

77.7 KB Created: 2021-04-08 01:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a26c94b26724e37ff1fd8e6c19415997 SHA-1: d460dd55ef7041f22fe3ef3a5bd36096c052481a SHA-256: c48d118affd5cb67a39d96d82f1942c9eb33b0abc6f94d47cdda3f4edb26b05b
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 leading to a suspicious domain, identified as a phishing lure. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the overall classification suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/123?utm_term=cv+template+free+simple
    • https://cdn.sqhk.co/susiwebuvowo/dLgeDDQ/pandemic_simulation_tool.pdf
    • http://setopin.mypressonline.com/lofekawifudipinu.pdf
    • https://cdn.sqhk.co/farafakilof/qiajhN5/alien_shooter_2_the_legend_download_for_pc.pdf
    • https://cdn.sqhk.co/vujejanar/OjgR3Sf/huawei_health_app_keine_watch_faces.pdf
    • http://kodavuviguwu.mypressonline.com/convert_to_kindle_format_amazon.pdf
    • https://cdn.sqhk.co/depifozopupe/4ghm5jI/storybeat_premium_apk_no_watermark.pdf
    • http://ranking-se.com/tum_hi_ho_instrumental_midi3m0ys.pdf
    • https://cdn.sqhk.co/sarimotel/XYgghyp/sixirewobaxixipuxujusabik.pdf
    • https://cdn.sqhk.co/tejusukaxajo/8zif9B2/mewasowofubitizu.pdf
    • https://cdn.sqhk.co/xovikojux/qqhbCpX/32921483592.pdf
    • http://autokenn.com/sokukojebogak27ypr.pdf
    • https://cdn.sqhk.co/dezosanag/cgfhfVa/veguxokoverib.pdf
    • http://mamuxorap.getenjoyment.net/kelisimatut.pdf
    • http://atelier-spb.com/mcgraw_hill_education_booksbvlr5.pdf
    • http://ladekepevij.mygamesonline.org/49243959347.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wujafivabipo/62108264589.pdf
    • https://uploads.strikinglycdn.com/files/665e6e11-542d-4244-aa4b-a4a31fb6154a/new_yorker_magazine_customer_service_phone.pdf
    • https://uploads.strikinglycdn.com/files/d479b3a5-ce07-49d5-95eb-05b09272c385/how_much_is_a_cochlear_implant_uk.pdf
    • https://s3.amazonaws.com/jopomodilamego/university_of_penn_information_technology.pdf
    • https://uploads.strikinglycdn.com/files/4fc2c8f0-72e2-4b3b-8728-2212e2349800/wejonu.pdf
    • https://uploads.strikinglycdn.com/files/65a9e9a8-9abc-4152-b30a-93d1587ada61/draw_a_person_test_questions.pdf
    • http://dasobiviwadodaj.atwebpages.com/adobe_editor_online_tool.pdf
    • https://uploads.strikinglycdn.com/files/3995225e-b86e-4b95-8363-7f986e4a78d1/how_to_draw_a_human_figure_for_beginners.pdf
    • https://s3.amazonaws.com/sukedil/tixufigukizuju.pdf
    • https://s3.amazonaws.com/senodiw/wall_street_journal_interest_rates_libor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f247.bin
2c0eaa3a42bede524878bc0080e016e1afc54bfdd69ed3fb7258db3bd03ae6ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF247 5012 bytes
font_01_sfnt_off00010342.bin
cc8bb9583fb402276387bee88f34d4e7dfd18b1865e43a6c3983559201d4da55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10342 11112 bytes

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