Malicious PDF — malware analysis report

Static analysis result for SHA-256 7827ada20946bdad…

MALICIOUS

PDF

74.0 KB Created: 2020-12-31 02:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 412320cbb1b9a2522f199c32d13cb456 SHA-1: e4e3827e16e88344968f110d73e16734ce7e10c3 SHA-256: 7827ada20946bdade2ec11e0696241e4192e4e1d8d09f77f48085c125e1a7523
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, a technique often used in link farm or phishing attacks. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to 'Egg Inc' and 'cheats', suggesting a lure to attract users to potentially malicious websites.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/strik?utm_term=egg+inc+contract+cheats PDF link annotation
    • https://wiromokuxuzub.weebly.com/uploads/1/3/5/2/135298753/233c264259ce8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5f9bdd221e38a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f9ed22fa37d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451927/normal_5fe0c2452efdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5fbb44a9971a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379030/normal_5fec139309658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5fcff43671a82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5fbae63d9f9f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/722666e0-3a27-4280-9755-5004acf734d0/6547051565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4548c1c7-dd22-493b-81c8-1392c2652a00/witcher_3_optimization.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/phillips_high_school_bear_creek_al_alumni.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_off0000e6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A4 4988 bytes
SHA-256: 43cc6959298e0855e563cd68064e83cec0b7b9200b3063dbc28ed0a010dd9aa3
font_01_sfnt_off0000f79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79C 10484 bytes
SHA-256: bc69501315a73f88fc8e51168f3b55e9d964f62106107ef251db4200a0858d7e

Open this report in the interactive analyzer, or submit your own file for analysis.