Malicious PDF — malware analysis report

Static analysis result for SHA-256 222233e1f1cedca0…

MALICIOUS

PDF

76.7 KB Created: 2020-11-09 17:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0d18508813c2a44b8da587154a5349e3 SHA-1: 92ffa6a49ac0bc50df1af2f55c3a2c2d1b3eeba8 SHA-256: 222233e1f1cedca0da2ff85d9e5278153ebe574b241747a61eb47d3a0a19828d
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://trafftec.ru/strik?keyword=1.+what+is+the+price+elasticity+of+demand PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f8b25e18d65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_5f972ba26e027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_5f9e81824a3e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5fa610729163e.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/1b79fc56-2604-46d9-9bcb-4d15a55ee641/.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa5bc72f-6fd7-429a-87aa-e10fea201d4f/probability_test_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c940c29-6616-4614-807f-f379f7b1cc38/45760417733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24c0a3e-d918-41dc-8c95-6b5441d3f36a/zoseredibuwipopopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06cb94e1-e1ab-4059-8dc1-6ec83720c624/32392377020.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/52048687043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38c61969-277a-4639-81bd-181261f9b883/lelopawalaviba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b75cdd8-c50a-45fa-931b-29ddae50f199/head_first_data_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/786550d5-295c-459f-94bf-f93b901bab0f/wwe_2k14_ppsspp_android_download_highly_compressed.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/pitoxufimonawikalojojul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/827e521e-16c8-43aa-a45b-52d0ad020983/29978553317.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD132 5576 bytes
SHA-256: 9cf847c8810bc90dd307fd89a0edf6528882d1f098eebe60ffb8fa555bbc7dbe
font_01_sfnt_off0000e427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE427 10680 bytes
SHA-256: 12ec6ddf7c3a78e23cbd8ca9269c167c2d860b0299d7dc6c62905a6cdb717a4a
font_02_sfnt_off000108c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C4 18448 bytes
SHA-256: 85bd60b0f421c9e9ff87e03fc94fad43a51ce174209b40fd3fa08f0e8576f460

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