Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d74a555518c207…

MALICIOUS

PDF

72.1 KB Created: 2021-02-19 08:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 545dc68196a4c8abc70d4fe4342493a7 SHA-1: 3fccc73809d5fd3c8909ce85d4448c5f0a485efe SHA-256: b7d74a555518c2072499352372e22f61dbb0f2b596c8873e7f29c72f50e793db
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=direct+inverse+and+joint+variation+worksheet+answers+rpdp PDF link annotation
    • https://cdn.sqhk.co/berirenike/icxaOhf/fetumikowono.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/jc932op/vuwuxirimazojopelijam.pdfIn PDF document text
    • http://item-mask.top/it_is_myanmars_traditional_folk_music_ensemble_that_is_composed_of_different_gongs_and_drumsmu84f.pdfIn PDF document text
    • http://lebadatow.22web.org/appraisal_answers_objectives.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/SBgflhg/zara_usa_sale_dates_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/wafifovuwel/ehifjiW/61286271807.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/jixeremipet/1208403430.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/incident_police_report_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/seran_pandian_tamil_songs_free.pdfIn PDF document text
    • http://novegiw.rf.gd/literary_criticism_bressler.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/95334544229.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/excel_holiday_planner_template_2019.pdfIn PDF document text
    • http://zoripevi.rf.gd/1983254531.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/terraform_assume_iam_role.pdfIn PDF document text
    • http://vudunebavibag.epizy.com/solving_equations_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/61259957679.pdfIn PDF document text
    • http://lawigut.rf.gd/97420462144.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/workaway_international_cv_format.pdfIn PDF document text
    • http://xuwuxubemepimox.rf.gd/xizikotivenufokiki.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_off0000df08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF08 5420 bytes
SHA-256: 1c473ca1eda806a0ec162a60e213adf340b4d4cfdaa7f38b0333f095e0272ec2
font_01_sfnt_off0000f191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF191 9712 bytes
SHA-256: 89385eb81b4c8354205cc7af46a1bac152e13ef2a2220ca8125b58e8e5e090d2

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