Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ec4f6a3408ea8a…

MALICIOUS

PDF

75.0 KB Created: 2021-03-30 22:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28261dfa59d96c5db74b128a8fd84b54 SHA-1: 5b8723338f987d3900e1e89838c19c684a6d8e36 SHA-256: 33ec4f6a3408ea8a14dd98ea2375a546db4b1e3f4b694e8c5a157d590d625281
136 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' confirms the document's intent to deceive users with a fake prize or parcel notification. The embedded URL leads to a suspicious domain, likely serving as a lure for the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://xezojetit.ru/strik?utm_term=how+to+work+apple+magic+mouse+2
    • https://bozixezexa.weebly.com/uploads/1/3/4/8/134861503/dejovajubi.pdf
    • http://dommasters.site/518977953723my3g.pdf
    • https://rifubagozoj.weebly.com/uploads/1/3/2/6/132695416/vegokavumunod.pdf
    • https://static.s123-cdn-static.com/uploads/4377414/normal_5ff679fa8afeb.pdf
    • https://cdn-cms.f-static.net/uploads/4383149/normal_601763b41acf9.pdf
    • http://bighome.space/zajuxurodibonunowovatsf7c.pdf
    • https://cdn-cms.f-static.net/uploads/4443356/normal_6054f6e816ef7.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn-cms.f-static.net/uploads/4417814/normal_6052ff56d2f7b.pdf
    • http://gladkoe-telo.xyz/frases_en_ingles_basicas_para_una_conversaciona5qmf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bagisi/malaysia_lonely_planet.pdf
    • https://s3.amazonaws.com/savifin/11518192964.pdf
    • https://uploads.strikinglycdn.com/files/a9df27fd-6631-4871-addb-3b43a6265a38/70913729580.pdf
    • https://uploads.strikinglycdn.com/files/9272973d-7b68-4f08-b4cc-ac5893fd2f26/6802965212.pdf
    • https://uploads.strikinglycdn.com/files/6ea85cac-094a-4867-825f-d81c9fd24b02/nozubunejasejavasebamijo.pdf
    • https://s3.amazonaws.com/sirilagewuga/inspire_homeschool_high_school_diploma_template_with_seal.pdf
    • https://s3.amazonaws.com/jinabisura/cash_up_sheet_south_africa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e63d.bin
ee9e98802cc7fbbcfa9fa706bc37d2f439daadc77949bce8f6c549aee140babb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE63D 5500 bytes
font_01_sfnt_off0000f8f4.bin
c51dd5f22a8291b8f7639401ae0fbbb9a8e77b149345fc7c74045f8a3b6a73ad
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F4 11060 bytes