Malicious PDF — malware analysis report

Static analysis result for SHA-256 a937f0c62746b697…

MALICIOUS

PDF

80.4 KB Created: 2021-02-19 22:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ee0cc8c3d73add5d84aad93e7fbbc360 SHA-1: be8bd2a82873638bc80b67994bd547e4f354b2e4 SHA-256: a937f0c62746b6971b3b642e53c35ae9a9cafd81c598a8af2648e8be6c31ca21
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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://jottigo.ru/strik?utm_term=the+castle+of+otranto+a+gothic+story PDF link annotation
    • https://cdn.sqhk.co/wudarivat/hd3ieMm/snake_stickers_wastickerapps._com.pdfIn PDF document text
    • http://dmdmassage.com/all_pakistan_mapp33z6.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/JkigWsm/taking_notes_from_textbooks_template.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/judith_glaser_conversational_intelligencejckap.pdfIn PDF document text
    • http://milesnires.xyz/88554798005i9fwu.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/Z7ihUhi/73305181174.pdfIn PDF document text
    • http://pixxel.life/lokorirejejuxarinesoro8xq6h.pdfIn PDF document text
    • http://quickpapp.online/nakenazevef.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/somisilegex/fefiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/togosunegisaturinepuk.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/44529350473.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/aladdin_bold_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/autocad_2d_elevation_drawings_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/swot_analysis_ppt_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/suxomiviro.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/8739225498.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/chisel_and_bits_1._8.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_off0000fe01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE01 5192 bytes
SHA-256: 640fe96337d30bc9accc138eda00a6bf2d758c67eb4ebc5cd1a97b626f4598b9
font_01_sfnt_off00010fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB1 10936 bytes
SHA-256: 8941bc2a019da8d79d8a742835a81c33be50adab8978a25300d6020c00b78b91

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