Malicious PDF — malware analysis report

Static analysis result for SHA-256 94373fc45c50d347…

MALICIOUS

PDF

75.8 KB Created: 2021-05-22 03:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fd9940c3aa89910c5fb6852f6c773900 SHA-1: 947287eb4dfe772a8ccd3fc239282e9d8d2bfbe5 SHA-256: 94373fc45c50d347091e85c250dbc9631855ff708a3eb4c8b43f85acc1e53539
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/strik?utm_term=caterpillar+3412+marine+engine+service+manual+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ad6ccd-7542-4aeb-8e3a-993b2f2d3c84/amazing_grace_my_chains_are_gone_chords_in_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04692950-eeca-4d9d-99c8-cad4b4a6ebf8/zomidu.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/annual_leave_application_form_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aeab70e-56e3-44f7-9ce7-d8e6983a9d2a/questions_for_the_ransom_of_red_chief.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b5c7a3-f95e-4435-8b17-e785b462b6b5/molezejufefuwudetulixobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae2e235-313b-48e7-b9fb-299b1c68e193/fanikafudoguduboj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d564264-4d70-4898-987d-f8acb468a199/icom_ic-207h_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24299045-54ea-441d-92e0-042dc2aa101b/free_blank_frayer_model_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e40341-aa4a-4f74-8246-dc7281c94ed2/suxivelemuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143bf78b-834f-4eaa-9f56-12cfe82c2166/pulilezawowiwexazarowodu.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/60013262789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9138a4b-346f-496f-9f44-35fef8c425d7/the_heiress_full_movie_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa5a5ad-3bf2-40da-99b8-b74a35f093aa/world_history_quiz_questions_and_answers_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164284b7-8442-42f3-9ac1-5c94c3744592/how_to_describe_a_rainbow.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/datewejupejozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38cc391a-ccec-400c-8c48-90a549afdf61/colt_ar_15_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/brother_sammy_menso_mene_hwan.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/strides_running_store.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_off0000e9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FA 5876 bytes
SHA-256: d384b5b20e1f48a5a20490cc17bdb6926f5a42373b174689296e507b74cb4099
font_01_sfnt_off0000fdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF9 10364 bytes
SHA-256: 5c79c3b306902540c11606e4060f7f8ba235f09b1a2645910c5370e976ab213f