Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb61adc387a79527…

MALICIOUS

PDF

72.4 KB Created: 2021-03-27 20:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3eccdad0ea6e37f32f465732eb7d2b56 SHA-1: 739a5f1e7db904647d0af3edf751dc81b2a2f8c1 SHA-256: cb61adc387a795273614743fa18da6ec4072bd693eb4702c3fd6a11137c71371
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 0.9997

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://dugedepap.ru/123?utm_term=guide+to+intermittent+fasting+keto PDF link annotation
    • https://cdn.sqhk.co/texonatuzi/xUifhdB/dash_panel_car.pdfIn PDF document text
    • https://cdn.sqhk.co/tobamozusaj/dgejjRL/remote_video_editing_jobs_los_angeles.pdfIn PDF document text
    • https://cdn.sqhk.co/wafizogep/g6jaNhh/74238049415.pdfIn PDF document text
    • http://olx-delivery.cc/infinitives_worksheets_for_grade_8fnrkx.pdfIn PDF document text
    • http://bitjoms.xyz/juxujubawabutapkb439.pdfIn PDF document text
    • http://italywow.pro/wii_u_error_code_103_1401tp5cc.pdfIn PDF document text
    • http://optamorem.com/73663509362mn6d4.pdfIn PDF document text
    • http://awpmode.com/2031097915ld4dd.pdfIn PDF document text
    • https://cdn.sqhk.co/pusobatosip/gdhiIgd/marketing_manager_degree_in_canada.pdfIn PDF document text
    • http://erethiztzj.space/43162381576ircwr.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/rimejiguvif/79700804016.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/what_are_the_four_sundays_in_advent.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/sony_playstation_3_emulator_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1757eda9-4f6e-4ae8-962e-b4bd973d07f0/tomtom_go_500_battery_change.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af01be8-59d8-4354-ae6e-80afa84d54ab/cognitive_psychology_jobs_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/89359923724.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/shs_mathematics_syllabus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134a2da5-d7ef-448a-aa73-57acbcb832b0/shimano_di2_ultegra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2f2a98-2431-43fd-b8fd-17c15a7bdc6f/easy_guitar_chords_for_xmas_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/jquery_ajax_application_octet_stream.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_off0000df34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF34 5292 bytes
SHA-256: a5e31e25de35ba268847ce63aa29a25dd8b6cde4307c5822829a522ee04f8bf0
font_01_sfnt_off0000f121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF121 10152 bytes
SHA-256: 0da1e97844abb9185f709ab1968691a8345f9e546a5670a31667d672237a67d3

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