Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0be3601be185bd…

MALICIOUS

PDF

76.8 KB Created: 2020-11-10 23:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2e8da62cd04dc44d9163bce47544af3f SHA-1: 2f01c183b691d5373d1b3c25f50451bed74dcbec SHA-256: cc0be3601be185bd0598fc1178dd5e2cc3404aa9889a88537ed9577088417713
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/strik?keyword=glencoe+algebra+2+chapter+3+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5fa7464609884.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/300ebb25642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5fa6642b1c14d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5f9f4264df142.pdfIn PDF document text
    • https://buwulikifem.weebly.com/uploads/1/3/4/5/134583505/3690414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408483/normal_5fa476384303f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8e577fa3285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421462/normal_5fa53b4b77740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416514/normal_5f9fd337cd102.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/ritoma/litukeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2906ee8-6b7b-4c27-8f4a-b7fbe688cebc/amplitud_y_periodo_de_las_funciones_trigonometricas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20cc0d0b-5034-4d54-9bce-cb52b83c5966/73236273088.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00D 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off0000ea50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA50 5920 bytes
SHA-256: 5ad04a2ff146404e89b902b78204bbf4b530d8062ecbdf41b13fe2338cf463af
font_02_sfnt_off0000fe8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8C 11600 bytes
SHA-256: 095a5491862ccaaccbcf718ab5b6b9115982de6d0757da245b4c7f9881381fcc

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