Malicious PDF — malware analysis report

Static analysis result for SHA-256 d367c43ac070c508…

MALICIOUS

PDF

164.4 KB Created: 2021-02-19 08:13:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5590b976dc994e9929f24f205b82d123 SHA-1: 57d94a283e4cc46b87cc5e68471cb7312dcf2a10 SHA-256: d367c43ac070c508430c24d44e0f670a8644d7ca4cc9c81d4b29333b4b4469bc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9993

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://maypoin.ru/123?utm_term=what+is+nu+text+in+the+bible PDF link annotation
    • https://cdn.sqhk.co/gugapedulob/Ai6tjhc/qr_barcode_scanner_app_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375194/normal_5ff53cf166d0d.pdfIn PDF document text
    • http://mybiol.site/6540212243iu3z1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460694/normal_5fc8dd954c714.pdfIn PDF document text
    • http://bejegom.22web.org/jabber_for_windows_admin_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471512/normal_5ffe0012cd0e1.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/iijdOMY/capstone_logistics_tracking_staples.pdfIn PDF document text
    • http://winfreeiphone.xyz/begupusodikisofexokuje6n7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491451/normal_5fc9f9d764e8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5fe1085e3a5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5fdc40ae6fec2.pdfIn PDF document text
    • http://repair-planshetov.ru/sasakunokuwamu0pkaa.pdfIn PDF document text
    • http://fbdirect.site/53781598748z36b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403413/normal_5ffc735e25004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402486/normal_6029c8da86dc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460255/normal_60291e454c837.pdfIn PDF document text
    • http://gijixig.22web.org/93103868367.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/sugowubuf/94086990565.pdfIn PDF document text
    • http://lisevazoni.rf.gd/34039864837.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/stratego_waterloo_rules.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F6C 4672 bytes
SHA-256: 2778a8c8bc681ddb351ad4e577b0466de2dc43f0936125c849edb2995fe2ee5f
font_01_sfnt_off00024f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24F47 11172 bytes
SHA-256: 161c635614d26e1a6a84c81ee1415136d51d5fffd955059abad976b6dc014e23
font_02_sfnt_off00027530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27530 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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