Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7c37d69c7d0da9…

MALICIOUS

PDF

79.2 KB Created: 2021-03-23 21:04:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2c9957db33ee515b398678c4aa926b8b SHA-1: 509235b8855fafd6b00e2eb43a0c86210e69d3ba SHA-256: 8d7c37d69c7d0da96965e7468ea6ce0ee4dbd0703dcc45ea2b7b2fc0e1b13ac9
96 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 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 0.9996

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://soxebez.ru/123?utm_term=brief+format+word+2010 PDF link annotation
    • https://cdn.sqhk.co/letijefa/d6DnEG4/boat_driver_license_mn_appointment.pdfIn PDF document text
    • https://cdn.sqhk.co/togixulala/Wr5gdT2/extended_essay_guidelines_ib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7bd20c18-f810-4a31-a17c-1cc8898287dc/75009390990.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/my_friend_dahmer_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56e8e4e-2e27-4bd2-babb-8f526df01b30/can_we_ask_employees_for_covid_test_results.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/burnout_dominator_soundtrack.pdfIn PDF document text
    • http://pirapisanuton.epizy.com/dewibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fe5a664-5914-457b-8279-c3bea15b123a/kj_kgk_to_j_kgk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90e81ef6-4bbd-4e73-99f9-e1498c029c2c/32151716314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f3ad84-35d1-4662-91a0-ffa471a4b64e/how_to_install_buck_stove_insert.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/28973310659.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/bongo_instrumental_beats_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64454ed8-b41d-459e-9fec-9a8c38a4c613/musical_notes_frequency_chart.pdfIn PDF document text
    • http://silapopo.epizy.com/spotify_mod_apk_apkreal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a514de-5fb5-493e-bd0f-8d130661be0b/nazenixoxevimekarawitofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8857347-9091-44d5-b8dc-8e65922380b9/how_to_subscribe_with_twitch_prime_on_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35433a78-4ec6-45e9-b21f-dd2b4df72f3c/how_much_does_it_cost_to_get_a_chromebook_screen_replaced.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/circuit_board_wallpaper_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d693a8c2-7ba6-45f6-8fae-532cc676a525/kevin_harrington__zig_ziglar__secrets_of_closing_the_sale_masterclass_2.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1daa9b-efc7-4ebb-b17d-8049d1b8935a/dagenaxoves.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca76932a-8480-427e-9c6a-02b335be0e3a/vesuz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA10 4992 bytes
SHA-256: fe15fa45184aa3c51c3bc7c15794758c685e7196f584703989b80394c08c1bd6
font_01_sfnt_off0000fb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1B 11800 bytes
SHA-256: 567d98112e7378925915ba78eb1061e6ca5dea0118416fc8f6739d9c6212be17
font_02_sfnt_off00012198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12198 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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