Malicious PDF — malware analysis report

Static analysis result for SHA-256 e164732aebd86b9b…

MALICIOUS

PDF

60.2 KB Created: 2020-11-17 23:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e8655d647fb152d1815eba1100c1a800 SHA-1: d81ff83e6b908239f6a93701280cdd2cb6e605a8 SHA-256: e164732aebd86b9b80c4cb98d6c097d42b4abc38c24aeab0249aa3eb598d1bc3
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://cctraff.ru/strik?utm_term=green+hell+grappin In PDF document text
    • https://kukotefuses.weebly.com/uploads/1/3/1/6/131637352/8c6df.pdfIn PDF document text
    • https://wavupuzubeje.weebly.com/uploads/1/3/4/2/134235525/kedudilibi_fisigu.pdfIn PDF document text
    • https://kawigijutugin.weebly.com/uploads/1/3/4/3/134351661/5723911.pdfIn PDF document text
    • https://xataramev.weebly.com/uploads/1/3/4/3/134320843/tapalisizemef.pdfIn PDF document text
    • https://letolonenuxe.weebly.com/uploads/1/3/4/0/134095956/ladifukute.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • https://zukifetev.weebly.com/uploads/1/3/4/7/134725253/9858618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5f8ef7aadd10c.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/tomaxade/i_am_legend_by_richard_matheson.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/contoh_membuat_surat_lamaran_kerja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b5e2d2-a27c-48be-a428-48c976f5f2a3/febekabuxekefar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf44ca90-e15d-41b9-a783-5a8007a99e66/padaweze.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/lepuditiwujop.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/selavefikatobakoni.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_off0000b1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F2 4936 bytes
SHA-256: 4e38c744c540ac97c19347b16e28a0729e2e2dd5d51fc9a866910fa776c53dc5
font_01_sfnt_off0000c2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B7 9816 bytes
SHA-256: 8e298e8ddf03cbaa77b2551af7463e00213427b18714f4a80597ffe9b98c6a1b

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