Malicious PDF — malware analysis report

Static analysis result for SHA-256 b988490e068a2899…

MALICIOUS

PDF

69.1 KB Created: 2021-02-14 09:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cc326000970562a48cd14bf89aa5890b SHA-1: 1acd91a5c4f0db1884a9048bf9d393ee757fa296 SHA-256: b988490e068a2899de0b1e410176702e6951b1f7b5b66098606059136891c451
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/wix?keyword=como+ser+un+hombre+alfa+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/mareduviger/GiegfSN/cartoon_channel_list_with_price.pdfIn PDF document text
    • http://creditstar-kabinet.com/distance_time_graph_practice_problems_worksheet_answerslgm27.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/Jhfaajh/bubijeso.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/best_santorini_hotels_with_private_poold0dam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5fecbde3a12db.pdfIn PDF document text
    • http://pifumufupes.iblogger.org/vonomamusuwewitafenizula.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/LiijJqM/28658863604.pdfIn PDF document text
    • https://xitapazutirubej.weebly.com/uploads/1/3/4/8/134882608/137838.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/Ejeqjgh/pufelojidelakogupomabewe.pdfIn PDF document text
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/963572.pdfIn PDF document text
    • http://affilateapp.online/gufuvejetuzp4.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/daniwodug/1558784010.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zapivobip.pdfIn PDF document text
    • http://regujag.rf.gd/google_chrome_web_browser_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/wepolijariritawanug.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/islamic_finance_development_report_2018.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_off0000ce63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE63 5500 bytes
SHA-256: f048795d3774c919680f9062daf5d15e178446b6e767a194af4298db56c4d552
font_01_sfnt_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 11436 bytes
SHA-256: 3b83525462af20aab10c9b68136a1d01c13fd0a9c73d85ba2105cf7fe8b024dd