Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e3d3f66afb7755…

MALICIOUS

PDF

85.3 KB Created: 2021-02-27 09:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 760ee6e94e6aa1b0731fc6a9d57c45dc SHA-1: dec18c0c5d58fdbba4eab83b8aaffe8430643595 SHA-256: e5e3d3f66afb7755fc037a477ac94a39bf47d92f9d950c52b3e63a70e7766482
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://lozipotod.ru/award?keyword=la+educacion+media+superior+en+mexico+ensayo PDF link annotation
    • http://arnautmebel.ru/nafafakazejizaxejuguxukfezd.pdfIn PDF document text
    • https://cdn.sqhk.co/nofatazor/cigjObP/the_impossible_quiz_book_chapter_1_full_screen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481836/normal_601762672674c.pdfIn PDF document text
    • http://modozadubop.mywebcommunity.org/pomuxefitupipa.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/how_long_is_romeo_and_juliet_bookuc63r.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/gakunuraxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388060/normal_603938ac104ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470399/normal_5fd68c504d81b.pdfIn PDF document text
    • http://graatorama.space/pounds_to_ounces_conversion_sheet9ti51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410199/normal_5ff79d747fb12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422180/normal_5fdac0003f88b.pdfIn PDF document text
    • http://qrastenmap.online/majogililedomet76a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vapufebifuv.epizy.com/nursing_case_study_template_word.pdfIn PDF document text
    • http://kudukel.epizy.com/customary_conversion_worksheet_word_problems.pdfIn PDF document text
    • http://gofirog.epizy.com/fujepetarenoriwe.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_off0001103d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103D 5296 bytes
SHA-256: f36b903ccd666012e219e1a85679b6e48128caac297b734a372f169be9c94af7
font_01_sfnt_off0001223a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223A 11240 bytes
SHA-256: e7184bec09024c5f5f0ce7d5469be09fe43789db1e0c87ca61083b8c0685b3ec