Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b5555fbbdb1ef4…

MALICIOUS

PDF

64.6 KB Created: 2021-02-25 21:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 88ddd131f40017d3db7250e62f01f6e8 SHA-1: ed4e684f83c9137d76d861389fa1d76beb35d3f5 SHA-256: 86b5555fbbdb1ef4e14a2b317aa14ad308a542940867f6e08813302ee93df6ed
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://seumenha.ru/award?keyword=how+to+remove+disc+from+ps3+fat PDF link annotation
    • https://cdn.sqhk.co/jonilinenuvo/iYPjcDd/bawugesetipirev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501233/normal_60075b277256f.pdfIn PDF document text
    • https://narefipikabisip.weebly.com/uploads/1/3/2/6/132682930/vutufu.pdfIn PDF document text
    • https://cdn.sqhk.co/pulizojiwim/Jpii0ia/football_coach_app.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/iesiflh/siberian_tiger_vs_lion_real_fight.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/hJ3UxGP/22837556508.pdfIn PDF document text
    • https://cdn.sqhk.co/kojanakif/ih8VFGe/loxumevebowimazapoxolig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_6013c9b03f147.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/zitamipi.pdfIn PDF document text
    • https://xegoratan.weebly.com/uploads/1/3/2/7/132712572/4203116.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479235/normal_5fe2c71757ea4.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/5jcgeOC/fudosununazopisupon.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/jdzYXig/rarorosoj.pdfIn PDF document text
    • https://cdn.sqhk.co/fefuxumito/5GPCqh2/vasisovete.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lujuxug.epizy.com/filmic_pro_6._5._4_apk_cracked.pdfIn PDF document text
    • http://tobesonev.rf.gd/76603169784.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_off0000c120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC120 5544 bytes
SHA-256: 91996fcc87de25ef43e98e1a4bd34161d4064842f59c2f46b69fc62155321b2d
font_01_sfnt_off0000d3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FB 9748 bytes
SHA-256: 056e4dedebb966a01e4d9ca702206c507ca15f0839d215ec81caef781c61c7c0