Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d76eb3222a5b8bd…

MALICIOUS

PDF

74.6 KB Created: 2021-02-25 06:17:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8a4d430560a574c809f937d826cf95f1 SHA-1: 2004c4b05eef3228dd21b989f1add86856d56808 SHA-256: 1d76eb3222a5b8bd7e7a5a0e0e9789995211d89fea3b68680124da86e8f3842b
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Un curso de milagros' and embeds a URI pointing to a suspicious domain. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The embedded URL is the primary indicator of malicious intent, likely serving as a redirect to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jottigo.ru/strik?utm_term=un+curso+de+milagros+texto+capitulo+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426676/normal_5fffb8fb1984b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484365/normal_5fd6469e9459c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fef6022ae256.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/TgmOljg/51151859857.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/jadere/vpn_client_fortinet.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/28784887969.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/calling_recording_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/rubaruganajeketazis.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/tenuzemenevojaxizedon.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/how_to_fix_jammed_gun_dayz_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/apple_ios_splash_screen_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/91334544717.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/zilefugegaroro.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/66118126346.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/occupational_safety_and_health_act.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/xewigudam.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/crossfit_open_20._2_score_sheet.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_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 5584 bytes
SHA-256: ec57687080620c54ad3521414b93e167af6dc3cdfe7761ddd1dd8bfe8f792a35
font_01_sfnt_off0000f883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF883 10896 bytes
SHA-256: 17f5c38b50c502ff882a6b060ddf0e64c7cbeed5acdacc3bca41f748b659daaa

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