Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebc95c4c614fe3c…

MALICIOUS

PDF

77.5 KB Created: 2021-03-02 21:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 1ea42f8a7e1579eb7113e3fae3a609e3 SHA-1: c9c0b815f2a2025645c30cd5ebb2f77f45f9e4bd SHA-256: 2ebc95c4c614fe3cc2e4358860581cbfd2c7206ff29755448c9df23706a04c11
126 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting and acting as a link farm, which is a common tactic for phishing or distributing further malware. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, aligning with T1566.001 (Spearphishing Attachment) as the likely initial access vector.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/strik?utm_term=what+order+should+you+read+the+after+books PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403818/normal_6018004589d13.pdfIn PDF document text
    • https://lelugawe.weebly.com/uploads/1/3/4/5/134590829/migozitetevedelimebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485004/normal_601651914ab1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387826/normal_5fcc3805abde3.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/one_minute_manager_summary_ppt.pdfIn PDF document text
    • https://vidiwubiref.weebly.com/uploads/1/3/0/8/130874646/puvurapeja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461484/normal_5ff8448e4e9a4.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/honda_zoomer_x_parts_manual.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/wawop.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/3839408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452861/normal_600b776daa4ba.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/xumakomowi/beveridge_report_full_text.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/43102421233.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_off0000f2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D4 5316 bytes
SHA-256: c3f64b8b8bfe6ded161ea3cc6d85d55252f3eaf3fee4a9f522755c38b4ebd245
font_01_sfnt_off000104f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F3 10448 bytes
SHA-256: f9fdc6cdbf8a92ad37f6aa993475ed153df8af02a07823c8904b5a50f27a3aea

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