Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c11f459c3928b1d…

MALICIOUS

PDF

72.1 KB Created: 2021-02-11 13:32:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 65170105259c4c979ecea2cda9d21f1d SHA-1: de6f66d695381a12f1129acc8de1635adff83913 SHA-256: 7c11f459c3928b1dc1385f4a5ea52a6c7fce2a8c285eb8df78fb5aaae7e5a070
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=casting%20crowns%20nobody%20free PDF link annotation
    • http://kukushka.space/industrial_management_dictionary_appapg8a.pdfIn PDF document text
    • http://maewallace.com/sushi_neko_restaurant_okc7kygo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_60202d99b3c17.pdfIn PDF document text
    • http://abreudesigns.com/night_of_the_living_dummy_214yav.pdfIn PDF document text
    • http://carbackseat.site/todewujuzuvilururafojawi43pc.pdfIn PDF document text
    • http://merovew.xyz/nutoveshtvh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_60170cd7a7116.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_6011545ec33e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486758/normal_5fcc7219e6465.pdfIn PDF document text
    • http://wowit.pro/bsc_computer_science_unisatdm7k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471114/normal_5fc777ab61ee0.pdfIn PDF document text
    • http://evatopshop.xyz/669678299411bdsa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_5fdb0c88bdb9f.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/sefepugolupalax/37640078804.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/american_express_online_service_platform_email.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_off0000dc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC86 5396 bytes
SHA-256: 08eb1d4c0d259364a87f11ddb6de7ebc60531c9b8de062806842b7fe90106be9
font_01_sfnt_off0000ef03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF03 10780 bytes
SHA-256: c725ecfc4a7d9f131aaa1dedae1194b7779848ecab63165ddedcab54678a640c