Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b769c4b0ee2f0b…

MALICIOUS

PDF

79.6 KB Created: 2021-04-07 17:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9a541a14a2fddfa72d048be0e1b8fe3b SHA-1: 9517ff364dfd00eb318a6ebe231a01bf29cb7546 SHA-256: 41b769c4b0ee2f0bb1a1b5d8d8f1bcc1d5c0fdd26eed83a18af17eac24c9d45d
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://resalured.ru/strik?utm_term=mcsa+windows+10+study+guide+pdf+free+download PDF link annotation
    • http://towufato.mywebcommunity.org/3635025654.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/68350837873.pdfIn PDF document text
    • http://nusowutevu.getenjoyment.net/94207316356.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/gcgjgjp/new_gospel_songs_2020_list.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/geid8oP/fozezemetafako.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/gfwXhbQ/rezaponedi.pdfIn PDF document text
    • http://kofojoxake.mygamesonline.org/83362264727.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/FiaS3gf/60572346191.pdfIn PDF document text
    • https://cdn.sqhk.co/kofelejezem/jahcxij/ivan_the_gorilla_cast.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/37eadabd-9385-42c4-a83c-e90569b76630/data_analytics_jobs_near_me_entry_level.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e643e481-12ca-44e7-8c10-6a83b2717f17/lojurera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d9754fb-e818-4e21-80d7-acdcc1576350/navien_tankless_water_heater_error_code_109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87d57afa-a56f-4d34-b941-385b3b7c64b8/mechanical_engineering_technician_salary_ontario_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/040f1df0-e480-4d49-8f09-0b325fbbcfbe/98455912918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7aa3946-f202-4489-9d0c-0a4e5b17e07f/economic_causes_of_the_american_revolution_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5987d0a6-e420-4b93-b99a-20ed7f19ed6a/medal_of_honor_allied_assault_pc_cd_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44d8643-a43a-4102-af35-446c0f7f76e4/46369875776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a48dfc-68b8-4a76-b649-4392dae2ab9f/how_to_become_a_certified_medical_assistant_in_new_york.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0438dffa-6bdb-4a9b-afde-b88ed0863877/wolf_of_wall_street_cast_kimmy.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_off0000ebed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBED 5600 bytes
SHA-256: 793e2c0e73db07a56b2c17434644eb658687b72d6faa29a2edea14945e6d1b8e
font_01_sfnt_off0000ff22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 10520 bytes
SHA-256: 5a783725d4497ed206da21f59db0a2c2803415cc5962906a2cc881024b781ff2
font_02_sfnt_off000122e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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