Malicious PDF — malware analysis report

Static analysis result for SHA-256 643fecee365f0411…

MALICIOUS

PDF

75.3 KB Created: 2021-03-09 03:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 70c3dbe6caa7fde661667981b2dd30df SHA-1: 54a4eeef575e96337372c4c1c7e0afd89e84a656 SHA-256: 643fecee365f041175e294fa95c12e7d102aea9b36ab8e9ac5be8751e33cac61
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 0.9991

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://jacksth.ru/123?utm_term=mathswatch+fractional+indices+answers PDF link annotation
    • https://cdn.sqhk.co/guranotup/ggXiaNS/cute_panda_the_virtual_pet_apps.pdfIn PDF document text
    • http://nivekux.iblogger.org/18426874363.pdfIn PDF document text
    • https://cdn.sqhk.co/tedisebufen/wshcigj/pick_up_lines_for_tinder.pdfIn PDF document text
    • https://cdn.sqhk.co/jebozibiru/he1iaji/snapseed_photo_editing_online.pdfIn PDF document text
    • https://cdn.sqhk.co/mekibekowufe/3c40heo/volazuso.pdfIn PDF document text
    • https://cdn.sqhk.co/nujudemugipi/6jaETjc/guess_the_emoji_movie_answers_level_36.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/92de0fea-7e52-45a9-bf8e-b015987fd18c/craftsman_garage_door_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/808973aa-10f7-402d-a9d2-162fce02fb50/sapexavajarebokuredonuw.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/26266000961.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/clicker_heroes_transcendence_guide_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf05df79-f214-4e6f-8f2a-7b40fe80ff8f/fasabezoxuzowa.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/11410452658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff7b6a78-787e-4ff7-9261-b373bb09c23b/81003690034.pdfIn PDF document text
    • http://roxeruteruda.epizy.com/christmas_email_template_outlook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/25176178567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f76298f7-13e9-4af6-9fdf-4d3ca8789b6d/mercury_black_max_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5048687b-0a59-46df-ad9e-657bb3c03a44/whats_that_song_on_tiktok_that_goes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1207b495-7db5-4e46-8905-a732b4692fe5/zufatumelu.pdfIn PDF document text
    • http://valajawegob.epizy.com/94709627719.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/57568600045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27ad600-9a2b-43c5-9017-3317cdd28424/28957431192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d96011-9391-4cd8-a0a6-262e3e9c9197/original_cast_of_lost_in_yonkers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33469d95-dfaa-4fb2-bc92-f5d3bd716ad9/how_do_i_change_the_dst_on_my_g_shock_ga_100.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_off0000dd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 4992 bytes
SHA-256: 8c6e043e7be7e381b5827dcadd3b6453e8cd31d7af242758debde990af2ea2c7
font_01_sfnt_off0000edfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFA 10432 bytes
SHA-256: 1f554c72a5edd780c6fcd9e5a5fd2e6ead43f41521b9dcee9fad3caeb63446c1
font_02_sfnt_off000111c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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