Malicious PDF — malware analysis report

Static analysis result for SHA-256 68bfc497f4b1a631…

MALICIOUS

PDF

83.2 KB Created: 2021-03-01 15:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bb91156ce67818b76522dd165b578822 SHA-1: 5e897ed6318612fa7b602db4a9736b8766fe7f88 SHA-256: 68bfc497f4b1a63197eb93610ca20df42fc2efc5e557165d04c016946b2d9dbf
96 Risk Score

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://xezojetit.ru/strik?utm_term=what+is+nuclear+half+life+decay PDF link annotation
    • http://legko.travel/zikedixirawibunosilx9ctz.pdfIn PDF document text
    • http://fito4ka.xyz/acca_past_papers_f7qg7ei.pdfIn PDF document text
    • http://mnogolidov.xyz/naruto_shippuden_volume_176-196_summaryowqco.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/igjaghJ/xiximabulumez.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/L7geCgd/vomiting_and_diarrhea_covid_19.pdfIn PDF document text
    • http://chambrehq.xyz/bolufenosubzk5.pdfIn PDF document text
    • http://nupesupo.mypressonline.com/88367284085.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dogurof.epizy.com/lewajunadelixof.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/5837363442.pdfIn PDF document text
    • http://lutumogeli.rf.gd/nofaxoboxuvobiwe.pdfIn PDF document text
    • http://gozakovojuri.rf.gd/72945654335.pdfIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/selegidojexew.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/85302740758.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/a_gentle_introduction_to_stata_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/anganwadi_supervisor_online_form_kaise_bhare.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/dididazerato.pdfIn PDF document text
    • http://romusamepoma.epizy.com/1523474232.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_off0000ef46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF46 5224 bytes
SHA-256: 21757294906125b90da9553a2cad1ab7c223dfa1d9b15070b869b2b230b70065
font_01_sfnt_off00010115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10115 12060 bytes
SHA-256: 85fa73dce1dd8391b0963d80b5caabd9b47894b680221e931baec4d8b161c2df
font_02_sfnt_off00012a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A49 16084 bytes
SHA-256: f6dd43097ff77a7644066d793246590a76b2fb03a803bff94e9fefcac70f68f1

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