Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f10979756507255…

MALICIOUS

PDF

65.9 KB Created: 2021-02-23 05:28:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d25a28606bf474cd4dd10cc27b877b1f SHA-1: d3222db0d112aa1bb68a9e937359e1db82a09204 SHA-256: 8f1097975650725510c36e6b031b3382cd8b67461f029b2f5f163d0d2adfbd03
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a remote-support lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://seumenha.ru/strik?utm_term=genetics+review+answer+key+biology PDF link annotation
    • http://songkfrk.site/5504440985832i9e.pdfIn PDF document text
    • https://cdn.sqhk.co/japedovak/hjian7u/sports_connection_charlotte_nc_ballantyne.pdfIn PDF document text
    • http://tryplafond.xyz/95376828728r9gep.pdfIn PDF document text
    • http://nomuvafemokin.iblogger.org/8918232519.pdfIn PDF document text
    • http://in-arenas.com/39287671725ln4oc.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/anpjcxj/jerozi.pdfIn PDF document text
    • https://cdn.sqhk.co/xumobopore/ghgijgo/29570632472.pdfIn PDF document text
    • http://itagreen.fun/bloodlines_richelle_mead_download_free1770c.pdfIn PDF document text
    • http://13millions.store/wilesq9x7v.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/pujirageg/items_needed_list_template.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/95554012971.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/75448527412.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/43064479194.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/tupuxud.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_off0000c5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CC 5456 bytes
SHA-256: d6b7073e1a43b76f549019fa678d944d16e1614a0d66c791db699a4ee05b912a
font_01_sfnt_off0000d890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD890 9980 bytes
SHA-256: 15811e895d276846413aba217848be782d9a56c93a407f79758a05a99bfb208f

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