Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f200c0dfead57ea…

MALICIOUS

PDF

73.6 KB Created: 2020-11-11 16:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9be33cb9fc6ed508572d8fba5cda72a7 SHA-1: 2e63df45aac4a5e73c5310f8bfc7225d6b4f7864 SHA-256: 6f200c0dfead57ea1c1b03afcc5cbe764312725402f4ee6e37e9b766f051feaf
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirector infrastructure and a link farm. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the links suggests the document is designed to redirect users to potentially harmful sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=burial+of+polyneices In PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/lulazuna.pdfIn PDF document text
    • https://rovufeku.weebly.com/uploads/1/3/4/6/134636625/ef7feb46b3e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417408/normal_5fa7372213de0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fa5e71bcc2b8.pdfIn PDF document text
    • https://nepagezefo.weebly.com/uploads/1/3/4/4/134472827/45ff566a56ec2.pdfIn PDF document text
    • https://saxesejidor.weebly.com/uploads/1/3/4/6/134694827/6936584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415964/normal_5fa990a87a914.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/gofozuvekatuwuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_5f9254e776991.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/lulelepese/gopureti.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/fupununori.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_off0000e1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AF 5160 bytes
SHA-256: 50a7bac27552ebc20343c46f70aaa23e892302b6c628556f5b011d1f8ab0c8d2
font_01_sfnt_off0000f359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF359 11168 bytes
SHA-256: 0c87b26ce751ba6582e6a8676d9dec2b94df5b223abbe727bf1a7d45d8fa7bea