Malicious PDF — malware analysis report

Static analysis result for SHA-256 b370dce3898395f0…

MALICIOUS

PDF

95.1 KB Created: 2021-01-06 01:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3c041145c4808f01ab936a8f71bfbbc2 SHA-1: 7ba8f79b4f11fb6644a6c27d506d57d525a1bd5d SHA-256: b370dce3898395f056540725c698709e909dddcfaaae5654a56f437578d0b3de
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive 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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/123?utm_term=descargar+una+serie+de+eventos+desafortunados+pdf PDF link annotation
    • https://cdn.sqhk.co/fuwufupi/03XdciE/bore_gauge_checker.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/RYdthvQ/kivib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gewisetug/assassin_s_creed_rogue_remastered_pc_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a74e8e-8a1c-4da4-9711-2911b714ccc1/lil_wayne_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/fingal_bay_beach_surf_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766ad53f-8427-4662-8457-a45c83671c27/xivabusegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac370621-3241-4886-b988-b385362fab91/99295356840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be46317-cfb2-4af3-9370-12e3879cb913/86537650425.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/free_workday_payroll_training_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/42082207765.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf2c3ae-23c7-4e1c-86c9-49e02e964d19/ben_hur_full_movie_hd_popcorns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2806ebf-65de-4521-a6d9-b9515e85f871/98634446697.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/new_bengali_movie_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb80861-fa46-492d-ad96-0c25656508fd/piwufudelusubavuxita.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001168e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168E 4388 bytes
SHA-256: 4bda153518769a1b342896fc4f8206415cee9057fd3cf6aa2f805bec26dc0ae2
font_01_sfnt_off000125ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125ED 5232 bytes
SHA-256: 254ca988524db81fe0157900e16c6ea769065f0978429e7e3bf7e5101c9cd677
font_02_sfnt_off000137d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137D4 11864 bytes
SHA-256: b1b3f9888ec3ad1f465b560c440001310523c5dfc3ed3c03ab1a60c89bcc8dd8
font_03_sfnt_off00015ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EA7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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