Malicious PDF — malware analysis report

Static analysis result for SHA-256 c698311dae8269a7…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 12:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9813ec39fa7eb83fb956a281976acfe7 SHA-1: e7409297f101c78d4391eaf60657160134cbdfc1 SHA-256: c698311dae8269a791f83b999830334add672b418236aabd43c52881569e5c60
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=speed+of+trust+leadership+training In PDF document text
    • https://static.s123-cdn-static.com/uploads/4416796/normal_5ff0889eab4fe.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/fulimodefejaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384461/normal_6015146fb0659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467612/normal_601816fe2f689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383922/normal_600890d151392.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/2015_maserati_granturismo_convertible_mc_centennial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_603431dc1abbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_601d6b295906c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_60203a750ee1f.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/robin_hood_movie_2018_actors.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/how_to_use_a_nextbook_tablet.pdfIn PDF document text
    • http://dojepajeruzugux.22web.org/electronically_sign.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowiseli.epizy.com/adobe_acrobat_dc_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/penosozapiwafa.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/formule_molculaire_bicarbonate_de_soude.pdfIn PDF document text
    • http://javirukegeg.rf.gd/10685622924.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/amazon_prime_app_for_tcl_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/vsepr_chart.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_off0000d9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E2 5404 bytes
SHA-256: e91e5436a22e228f31ce358db7abc56a760cbb85bd5f421cfb9bb20a512fe95f
font_01_sfnt_off0000ec42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC42 10716 bytes
SHA-256: a59dcb7b4bf5d4c6176ad166a4c871906ef25309bf78968905f9fdb291352bf8

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