Malicious PDF — malware analysis report

Static analysis result for SHA-256 1805ba861fcd3413…

MALICIOUS

PDF

70.6 KB Created: 2021-03-18 06:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2e1ff964aab0515969c96b54b19a903c SHA-1: 1bd145af9ed2cc56c5346ade6252634b4b834701 SHA-256: 1805ba861fcd34137a70ba413a37ff9e3056e7bf5c791c21155253ad371d968c
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 0.9996

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://vilenefex.ru/wix?keyword=remember+the+titans+video+questions+answers PDF link annotation
    • https://cdn.sqhk.co/bolomadu/FniggjQ/28939941115.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/fnTYojc/blood_pressure_ranges_for_elderly.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474979/normal_5fcf029ceb93e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383302/normal_5fc5b80bcbbd0.pdfIn PDF document text
    • https://cdn.sqhk.co/lipebefaje/5Limhg0/airtel_direct_recharge_plans_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474470/normal_604a8293de9f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426090/normal_5fe2419423b22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fcb127c852a9.pdfIn PDF document text
    • https://cdn.sqhk.co/judigirowe/avjhhg5/gowarudakunusuzi.pdfIn PDF document text
    • https://cdn.sqhk.co/giwerezekobe/gggfMjh/nipuxofogunaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425514/normal_5fec3cf43e3fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503787/normal_5fc6097295b98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445880/normal_603fae7f7f2df.pdfIn PDF document text
    • http://lobomizozage.iblogger.org/nagulajanetutebolujovu.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/ghaOpUi/business_studies_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445890/normal_603ad1f426989.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c520f9e-3bcd-4c54-b7c5-d41f6eee606f/fosuwipogesosotinekowonav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67493004-1497-4fae-b047-a9c0a1a13c86/webogid.pdfIn PDF document text
    • http://felixoxajaxev.epizy.com/tafowob.pdfIn PDF document text
    • http://tawaxinazaka.rf.gd/samsung_mobile_whistle_notification_tone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22cedce-1f4d-4811-b76d-88f9b506efc1/75271162494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb1930c-72cd-425c-abca-e8ce6bbfd80f/microsoft_visual_basic_for_applications_window_excel_2016.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_off0000d6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F8 5460 bytes
SHA-256: 0a230548ecf49a52bbe1d0c32a5e59d08493e6744f3f8e6f73d735e9c16b50f3
font_01_sfnt_off0000e96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96A 10276 bytes
SHA-256: e50e23a3410f35ad55d5654d2c7295e3ae4f81f2ebfe4687f0feb3e0c65797ec

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