Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdeac265a85f8fa…

MALICIOUS

PDF

68.0 KB Created: 2021-03-01 00:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3d35dcf014f61894437838fd9dce7a70 SHA-1: 6cf6cea1b00200811014c3a982f6e2182be486e5 SHA-256: bcdeac265a85f8fac48eb999bab009700e1c74282c074b52cc50fee3f6dc28d2
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://pelibifir.ru/award?keyword=excellence+playa+mujeres+map+location PDF link annotation
    • http://satogolijosefas.iblogger.org/15300193554.pdfIn PDF document text
    • http://igrarazuma.info/droid_jump_apkrgy7b.pdfIn PDF document text
    • http://bafedudovodamo.medianewsonline.com/jefidekarapufilos.pdfIn PDF document text
    • http://jijufopofe.iblogger.org/bedawogaremokupa.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/19637426727.pdfIn PDF document text
    • https://nasuzezigoma.weebly.com/uploads/1/3/4/5/134587751/zebafago-zovirat-ronaguga-barezujusozena.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/flghcih/meme_pack_stickers_whatsapp.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/fhcejhq/fegewanedakakubiw.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/hgcieql/go_cash_loan_app_customer_care_number.pdfIn PDF document text
    • https://cdn.sqhk.co/xodegajeriw/bNgjcgi/withings_bpm_connect.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/medaliwifufugel/maa_chandraghanta_hd_images.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/the_adoration_of_jenna_fox_wikipedia.pdfIn PDF document text
    • http://tidewoxawutose.epizy.com/psychology_intake_form_template.pdfIn PDF document text
    • http://fukewabukitiv.epizy.com/82563974950.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_off0000cd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD94 5284 bytes
SHA-256: 341c23b52f9ac33f489ea2b20cff43ee688796342ed6a29124339e15c8403899
font_01_sfnt_off0000df8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8A 10412 bytes
SHA-256: 45d4641b41ac8a23a7e9026e0d5f47d912647f27b27c1bfd851590f9a664d252