Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c2560a0c09738a…

MALICIOUS

PDF

80.5 KB Created: 2021-03-03 18:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 20fa05926a72ff5425efce62e6930a25 SHA-1: a1c153fc39ecfabea4e13fe468ddfcf22fe3f405 SHA-256: c7c2560a0c09738a3ede7bb243efebc41dd5ef8cb79e0dbd3437adfe33cabe9f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that appears to be a lure, disguised as a product review. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of an external URI suggests the document is designed to redirect the user to a potentially harmful site.

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://druttle.ru/strik?utm_term=yard+machine+24+inch+snow+blower+reviews PDF link annotation
    • https://cdn.sqhk.co/wadelovelo/icghiii/litevede.pdfIn PDF document text
    • http://coins24h.com/alcatel_one_touch_fierce_7024w_firmware4i94r.pdfIn PDF document text
    • http://bridgecommerce.com/sloppy_birdo03xx.pdfIn PDF document text
    • https://cdn.sqhk.co/koxuzofu/ejijjoJ/nfl_news_covid_chiefs.pdfIn PDF document text
    • http://sofisejulewog.22web.org/allison_3000_transmission_troubleshooting_manual.pdfIn PDF document text
    • http://luzesawajipux.iblogger.org/rijilusapeniwibi.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/i8THCja/subozosibere.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/jblQOM9/89092250906.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jepuvituxog.rf.gd/8138575008.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/bonetale_android_cheats.pdfIn PDF document text
    • http://weketabafizevu.epizy.com/dasunivoxitaxisajaj.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/avast_windows_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/franklin_township_ohio_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/73792430804.pdfIn PDF document text
    • http://surofavuvaxono.epizy.com/british_council_listening_worksheets.pdfIn PDF document text
    • http://jakunivejejaxo.rf.gd/kingdom_rush_frontiers_upgrade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/34748989864.pdfIn PDF document text
    • http://wetizizokixo.epizy.com/crystal_reports_jobs_in_usa.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_off0000fc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3D 5652 bytes
SHA-256: 7b7adce66bb23b5199665ab19e4c56ca58218bc577e8769f45322eca68ae46f1
font_01_sfnt_off00010f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6E 10864 bytes
SHA-256: 388755bd5121cc48fb7104c50df5dce5c0314791bf71c2e3578ac8dcf8588205

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