Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ce9e610dce59a8…

MALICIOUS

PDF

68.8 KB Created: 2021-02-16 10:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 11be2dbf79e4df12e8071c1d8234404e SHA-1: 8512c6f5658479d786d54cc8b291fc641debf64d SHA-256: 42ce9e610dce59a8524e589d6b771d6c0871ef7605cdca239c36afb91dddf322
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 0.9998

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://druttle.ru/123?utm_term=psychopath+free+en+espa%25C3%25B1ol+pdf PDF link annotation
    • https://cdn.sqhk.co/vemudumuxixu/tUPmght/swag_hd_wallpaper_1920x1080_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_60059e45d230f.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/ecLsFQ9/shareit_app_download_for_mobile_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/fKiCjhe/the_farmer_in_the_dell_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378151/normal_600264225c59e.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/ja4ia1w/warzone_map_codes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401732/normal_6000559c3221c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416665/normal_5fe5328e8a3e5.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/jLc0Rjh/alan_walker_faded_chords_piano.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/zunaporam/bpmn_diagram_template_visio_2010.pdfIn PDF document text
    • http://sotixavar.epizy.com/63696945186.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/adulterers_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/julien_macdonald_dress_size_guide.pdfIn PDF document text
    • http://vamivesuger.epizy.com/describing_weather_lesson_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/aifmd_reporting_requirements_luxembourg.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/scenario_based_interview_questions_for_manual_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/korid.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/indian_army_sad_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/49211726234.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_off0000cb8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8F 5556 bytes
SHA-256: 0e9c79a633b5bfdeb580719ad14608afc429319024e329c4396936e0bd3a5ea7
font_01_sfnt_off0000de34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE34 11176 bytes
SHA-256: a23288dfa75d38bb3edf47241c74a3a429de1a7ef8dbf5e3bb4d394155fe7dfa

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