Malicious PDF — malware analysis report

Static analysis result for SHA-256 2183c2e5c53bf7e3…

MALICIOUS

PDF

68.4 KB Created: 2020-11-27 23:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c0e1a0593a10de141efa84ec56e2c31a SHA-1: 2ed6582f7bf57fc3ab761c5c72edea0fa7a8b06f SHA-256: 2183c2e5c53bf7e309557b2b26e827e609682ddec388fd0924ee4edf184d25e0
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=dmv+cdl+book+va PDF link annotation
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/00a2b2fd743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_5f9ea7229c526.pdfIn PDF document text
    • https://lowisaxov.weebly.com/uploads/1/3/4/3/134361609/4490632.pdfIn PDF document text
    • https://nobujowufovipi.weebly.com/uploads/1/3/4/6/134636268/gorotemex-zagaf-polamupo-deluvukewajib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450427/normal_5fad8908aa964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_5fad435c8534d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411691/normal_5f98caf06d642.pdfIn PDF document text
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/167816d7d0548e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f938872c95d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454819/normal_5f9fb0964be92.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/peveziwoguxuzam/61865622663.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/vuxuzavebegaver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e175c60-01ab-4380-88aa-673df190a224/34874649213.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_off0000c20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20C 4512 bytes
SHA-256: 9d9b723fab9e5adfabd7f769eb1a20e41526e1bc88ea06686458f52496d9873e
font_01_sfnt_off0000d163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD163 10632 bytes
SHA-256: 1bbf9c5da57a49f1381d1f12aeec50aa464271ba9cc027ab78d594956c51e749
font_02_sfnt_off0000f5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B4 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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