Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d44bbd97e52251f…

MALICIOUS

PDF

80.9 KB Created: 2021-02-28 20:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c00bc050bea4d62e1a4c27cabf4e1901 SHA-1: 4568682d72165728fbab20c2dde029f924766e6a SHA-256: 7d44bbd97e52251f275c55522e746cb26aa807d1c4a5c6f1e64841d075db8611
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://bologen.ru/award?keyword=hp+photosmart+5520+printer+troubleshooting PDF link annotation
    • https://golagunowij.weebly.com/uploads/1/3/2/6/132695575/b1c4e1ed903aaf.pdfIn PDF document text
    • https://kobuzonoge.weebly.com/uploads/1/3/1/4/131452837/bomigujabiperobo.pdfIn PDF document text
    • https://ginubeputugexow.weebly.com/uploads/1/3/0/7/130738710/6467607.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/powilefid.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/891274812.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/coleman_spa_parts_uk.pdfIn PDF document text
    • https://libidipoxojab.weebly.com/uploads/1/3/5/9/135981854/687584.pdfIn PDF document text
    • http://tewatag.medianewsonline.com/76381106806.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/plt_backbeat_fit_wont_charge.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/74206046531.pdfIn PDF document text
    • https://wimopoxidiki.weebly.com/uploads/1/3/5/3/135313965/xezisujivukamixew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/how_do_i_start_bitcoin_trading_for_beginners.pdfIn PDF document text
    • http://bojivudotafaf.epizy.com/20204917240.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/astrology_prediction_by_date_of_birth_in_hindi.pdfIn PDF document text
    • http://kuzemepusiloj.onlinewebshop.net/90553499165.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_off0000ffce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCE 5732 bytes
SHA-256: e308addda2de123674be1a1d3fc151d3e680c27fd827c69e5d50dd2ebe1d751f
font_01_sfnt_off0001131e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131E 10408 bytes
SHA-256: 0bbf77a4c41136ab7a4c516ef6d5c4f89bf6942e32daa718eb0f0a9c3ce01196