Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3456dfe12f1825d…

MALICIOUS

PDF

77.8 KB Created: 2021-01-18 17:38:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 17e2e0ff92f347f51eb5cdf92271ef10 SHA-1: 16468ce0d00af68f5b832c924d3c768b39f8f64e SHA-256: f3456dfe12f1825d830a9e9c441723127323592f75aa811e9a9a0ea5f44010d3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/aws?utm_term=elevacion+de+antigeno+prostatico+pdf PDF link annotation
    • https://cdn.sqhk.co/bajipugotox/thjAjjg/xomip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5fc9838f94177.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/hAgi5gn/nozitosok.pdfIn PDF document text
    • http://mafujewulig.66ghz.com/wirodopelopiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f8a8b62ea001.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/jdjj6he/50362126622.pdfIn PDF document text
    • https://cdn.sqhk.co/gazejuruni/r17tZic/3dlut_mobile_2_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/4GHLqgi/segib.pdfIn PDF document text
    • https://site-1171564.mozfiles.com/files/1171564/71583377059.pdfIn PDF document text
    • https://site-1231318.mozfiles.com/files/1231318/reported_speech_con_wh_questions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427528/normal_5fabb8a7c42c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_5fb9f61b476fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474222/normal_5fec37c0c4882.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/egdjjh2/bouncy_castle_for_rent_calgary.pdfIn PDF document text
    • https://cdn.sqhk.co/lojiwoxaz/jbhjjas/call_of_mini_zombies_hack_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://parezorizujax.rf.gd/bluetooth_update_for_macbook.pdfIn PDF document text
    • http://bixogonabu.epizy.com/bikaner_university_exam_form_2020.pdfIn PDF document text
    • http://zesivigodexewig.epizy.com/australian_visa_form_from_pakistan.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_off0000ee46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE46 5340 bytes
SHA-256: 8583c19de62ca1ed3e2d355bd00b7eaf8a63dbf7d80236d3799f486ea90b7496
font_01_sfnt_off0001008c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008C 12216 bytes
SHA-256: a51c73a0e9953385bc771d8f6cc1e37dea628531e25d5fa6c570992d549a7d42