Malicious PDF — malware analysis report

Static analysis result for SHA-256 99bb38986a302d8a…

MALICIOUS

PDF

69.8 KB Created: 2021-01-23 07:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3b4c9e084a15a1290dfb7ff26e80f137 SHA-1: fc67bfd76780134559ad8220d81289cfc0eb1cfc SHA-256: 99bb38986a302d8abce0de84e7d79ca5f9b477f7c27803a4c0552e9c19d33a39
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://druttle.ru/wb?keyword=space%20runners%20the%20moon%20platoon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466151/normal_5fed14c64085f.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/wimoxawoxuxebe.pdfIn PDF document text
    • https://site-1175981.mozfiles.com/files/1175981/jibojudaviziru.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/nTrgfhh/hay_day_game_download_for_pc_windows_xp.pdfIn PDF document text
    • https://vimebadexij.weebly.com/uploads/1/3/5/2/135295776/4ba9c799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422620/normal_5ffd224b19eaf.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/eEZghhb/15843527567.pdfIn PDF document text
    • https://cdn.sqhk.co/lazogapuvo/olkijGk/28008728799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478414/normal_5fce4494aba22.pdfIn PDF document text
    • https://site-1173386.mozfiles.com/files/1173386/ribonawewuluvitimobavuj.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/0jbigja/toy_abc_wood_blocks.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mabukivo.epizy.com/basara_3_utage_android.pdfIn PDF document text
    • http://sukilik.epizy.com/anemia_en_el_embarazo_definicion.pdfIn PDF document text
    • http://latowetutut.epizy.com/6024428363.pdfIn PDF document text
    • http://govatojajij.epizy.com/current_weather_report_near_me.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_off0000d32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32C 5276 bytes
SHA-256: 46c823eee1ecdc816854d8de84611f1c6d1cab5228b7b8b6e8df8149e640d338
font_01_sfnt_off0000e4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EC 11124 bytes
SHA-256: 33ef9489befb3367319e3b8207b72a706a7d81b92f792b227a8fac39db5e17eb