Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4b2c9e3ca38572…

MALICIOUS

PDF

77.4 KB Created: 2021-02-28 21:43:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ae2fe9173d9b45dfc59d8b18597947e5 SHA-1: 31fe45faa4e0d62249e40af51c500f986749a0c1 SHA-256: db4b2c9e3ca3857259974b713745086312c0a851b26fa5adade5dd449483f893
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://leonvi.ru/award?keyword=scientific+method+activities+high+school PDF link annotation
    • http://wonozudobitisog.scienceontheweb.net/pusisezot.pdfIn PDF document text
    • https://dagatofolake.weebly.com/uploads/1/3/0/8/130874029/tipatezidawugewakanu.pdfIn PDF document text
    • https://tutuludoj.weebly.com/uploads/1/3/0/8/130874598/ac022c6105aa.pdfIn PDF document text
    • http://hydrofthol.space/cue_sheet_editor7hqej.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/gdsAqUn/all_bitcoin_wallets_list.pdfIn PDF document text
    • http://vanlit.ru/xuneximutajokejoh17y4.pdfIn PDF document text
    • http://kpupnov.pro/google_chrome_store_for_androidbfofh.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/woxupusobez.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/golagufaxirizose.pdfIn PDF document text
    • http://appletopshop.ru/yakima_county_sheriff_police_reportsmvjxe.pdfIn PDF document text
    • http://gajonedorebuko.mywebcommunity.org/lofevu.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/tojujamitogabaxu.pdfIn PDF document text
    • https://xuxukogizi.weebly.com/uploads/1/3/5/3/135320654/46f36f5.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/turip/jizorolepolomukefolabowuz.pdfIn PDF document text
    • http://tifilow.onlinewebshop.net/where_do_i_go_if_i_lost_my_ebt_card.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_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 5504 bytes
SHA-256: 8edf1ab40937786e68b6fd013b583d16d4dc5990c4142babd35b3697221319c2
font_01_sfnt_off00010396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10396 10828 bytes
SHA-256: d69e8355c53cbaedfd242244df95bafa0492c9f9630a267fb373d56f7ba299dd