Malicious PDF — malware analysis report

Static analysis result for SHA-256 68681eaf7954fcd3…

MALICIOUS

PDF

78.5 KB Created: 2021-04-23 19:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7c733e3d2b8911c757cf7e00e1d3d9de SHA-1: f9d5065c6efea79d816bdc9a3097553c71ae8dd9 SHA-256: 68681eaf7954fcd328b7f52c92298f8bb4451e55f1d0d90624b7f2b0eff549b5
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 0.9994

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://golowaki.ru/strik?utm_term=how+to+use+fully+automatic+blood+pressure+monitor PDF link annotation
    • http://graatorama.fun/rafubaseg9716.pdfIn PDF document text
    • https://cdn.sqhk.co/budijapa/egiMVQh/nametiwoserodujinupofem.pdfIn PDF document text
    • http://urott-hu.com/boy_photo_smart71udq.pdfIn PDF document text
    • http://899themes-demo.ru/warrior_cats_books_serieswvsee.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/eNhhzie/events_this_weekend_in_west_michigan.pdfIn PDF document text
    • http://arevakar-travel.com/631953589067drsv.pdfIn PDF document text
    • http://quickpapp.online/sojul3y5ms.pdfIn PDF document text
    • http://anrostore.ru/4705320030870lfo.pdfIn PDF document text
    • http://familyit.pro/zivukuaiybg.pdfIn PDF document text
    • https://cdn.sqhk.co/wanoposuj/idijfkw/teacher_salary_by_state_ranked.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/nanowemyzwqk.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/h5eijo9/3825738166.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/resixexi/jofisogob.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/jekive.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/94417166385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e03aa1c-7070-4113-85be-f76dcc77b6cd/14245800397.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/diwijumupovupekoxesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80183b10-b6db-4618-a26f-45f4e7a237dc/transcendental_meditation_cost_nz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/628ea526-6ea8-44d7-8d00-fe9b9f71481b/52713126404.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/calculator_games_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7cfa28-edcc-43c6-8084-72585bd95243/burger_king_dollar_menu_hawaii.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/narepen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8161b351-299d-433e-b874-b9272dccb689/can_i_rebuild_my_own_automatic_transmission.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_off0000f35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35B 5596 bytes
SHA-256: c53426b57c02ebc7c8a02d740fdc28d4ba12e1df97b32a65462f566d80c8b0cf
font_01_sfnt_off0001065f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065F 11380 bytes
SHA-256: b05803c52cde8f52fb5bf5d59a86f792719af799374771f632d77196b64cea0a

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