Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4abea049c5f42b…

MALICIOUS

PDF

77.1 KB Created: 2021-05-23 14:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b9e5ad6191cd4368b3cb96f92ccfc5db SHA-1: d97246622e4cbc11f91243e369289a762b63916c SHA-256: 2d4abea049c5f42b90d9d654f66d754280c075641613eeb0eb3a528e03ea8f80
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 0.9996

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://crophysi.ru/strik?utm_term=how+to+get+free+chips+on+wsop PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369182/normal_600fba0ae6a30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448984/normal_5ff1066f0e91e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_6044cb763a8e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388614/normal_6052a122b8a8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501965/normal_605f4b1ce9ef3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_602b3d50211f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377388/normal_5fdfc54f29b46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_6018e18a18001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_600fbacb77ea6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451756/normal_6004954d964d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_606be6b206618.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405440/normal_5fe430564129a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491723/normal_5ffd792d0ac3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412899/normal_5fe20b43c9775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451375/normal_5fcda463a2014.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450247/normal_5fe975fa2e3e2.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/toniseligiwuzux/wazagimujaxor.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/dujejafaloba.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/9600343488.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/76619905374.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/financial_report_analysis_meaning.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_off0000ef5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5F 5088 bytes
SHA-256: d63117d5aff99703610609cce084a65b42cdef89771f7452b3c9c16e0de2ca96
font_01_sfnt_off000100d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D0 10632 bytes
SHA-256: 859aee81167e26beea88c17cfe5feeb7d757d0f60798abb94a7d956f3105e841

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