Malicious PDF — malware analysis report

Static analysis result for SHA-256 a349c4dbbcc88d31…

MALICIOUS

PDF

65.9 KB Created: 2021-02-07 07:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 67d15b6b6984ecc2e00b6b417e5d5930 SHA-1: 08c4e645c388822a8c792d93d99e2efd4afe2345 SHA-256: a349c4dbbcc88d312c3dc8d22e165255009dff1dc65c7f8ddae4c04269e552d0
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://leonvi.ru/123?utm_term=foothill+ranch+middle+school+bell+schedule PDF link annotation
    • http://expressday.online/walutunegepobibuxwmap.pdfIn PDF document text
    • http://rubka.space/calendar_template_2019_october_and_novemberekscd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fcdf9adbe7d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453908/normal_5ffbccec6af3b.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/dPgghhW/superhero_ninja_creator.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/d7jjp2C/best_iq_test_for_autistic_child.pdfIn PDF document text
    • http://bilkaita.space/roblox_ragdoll_simulator_all_badgeswfuxn.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/OspYxjf/59528850149.pdfIn PDF document text
    • http://opensalle.xyz/38512080503g8j1l.pdfIn PDF document text
    • http://arendaavto.taxi/dunoktt8bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_6016cc1db6f82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379718/normal_5fde5e46d71d6.pdfIn PDF document text
    • http://shopsupergood.site/niwomojesokilipetowuftf3yx.pdfIn PDF document text
    • http://hotita.fun/1603226021ntla0.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/fovezewi/memikalifupo.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/xixuviwowevujufobar.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/20297605246.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/behen_hogi_teri_movie_ringtone_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/open_broadcaster_software_for_mac.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_off0000c53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC53B 5272 bytes
SHA-256: 4e1c8d07c74b559da438cdc20905e534481c51a664e8fd663c13f277358d0047
font_01_sfnt_off0000d6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F7 10396 bytes
SHA-256: a3ca2082c31b3672e0c2954c10d71972956c366cff806521ac03afacf8a5eff6

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