Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef8022c2062d660…

MALICIOUS

PDF

78.3 KB Created: 2021-03-02 00:29:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c4f89c507fc2e90262eb6d27ac1abcfb SHA-1: 77356a5cfbdfa93ce1a876512d6ab2b80d40834f SHA-256: 0ef8022c2062d66032ed81fff64b291701823e6d361dec889a76c22df259491d
126 Risk Score

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://gimoguvi.ru/strik?utm_term=padi+open+water+exam+pdf PDF link annotation
    • https://fejuzewe.weebly.com/uploads/1/3/4/8/134883228/314e9ff55d42.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/cfhjHhh/rope_ninja_unblocked.pdfIn PDF document text
    • https://lomurawejajiku.weebly.com/uploads/1/3/4/7/134732321/3507a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_6037d95194bf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389809/normal_5ffe51742de02.pdfIn PDF document text
    • http://kavalibosesevu.22web.org/vifibizirosowufiza.pdfIn PDF document text
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/gopeminafusugada.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/makozamo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415974/normal_5ff411b78da47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424341/normal_5ff481e1b3928.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regozuluxawig.rf.gd/why_are_sub_zero_refrigerators_so_expensive.pdfIn PDF document text
    • http://fariwugakek.rf.gd/freedom_driving_school_homework_answers.pdfIn PDF document text
    • http://jujabezemaluwe.rf.gd/84555002501.pdfIn PDF document text
    • http://wekolaxoretewov.epizy.com/zolujakabelad.pdfIn PDF document text
    • http://lokemuwebofeg.rf.gd/roditisonurosejaxibo.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_off0000f694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF694 5140 bytes
SHA-256: 1755e75405ec54c88fe906b77a3a789abfed9818849d73c1215c382b1a5fbe2f
font_01_sfnt_off00010816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10816 10712 bytes
SHA-256: 27d4ce8f38d6fc722682724da2f198038b19526b2f677cd1d78a7f4a21a58f31