Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad1b193b9db0716…

MALICIOUS

PDF

70.0 KB Created: 2021-02-19 20:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 70367da88b537dab3884f55d6737ac2c SHA-1: 456b602e2b7324523c790eb2b46906296f811c98 SHA-256: 8ad1b193b9db0716e57b2a13a7d85492eaf4de0980c6ca1106c0715ff20b12ea
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://seumenha.ru/wix?keyword=heaven%2527s+just+a+sin+away+lyrics+and+chords PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391308/normal_5fcb277834630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_6016d0cf3df4c.pdfIn PDF document text
    • https://jixisejilikabow.weebly.com/uploads/1/3/4/2/134265892/wipugasazilu.pdfIn PDF document text
    • http://waliwosodumobu.iblogger.org/bluestacks_android_emulator_for_pc_windows_10.pdfIn PDF document text
    • https://zuxomizo.weebly.com/uploads/1/3/2/7/132710603/dijenavol_sejorejibagora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419001/normal_6014942163fbc.pdfIn PDF document text
    • http://fosijez.22web.org/apenas_um_rapaz_latino_americano_livro.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/egd8Egf/castle_crashers_remastered_characters_tier.pdfIn PDF document text
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/xijoxuxadekuligosege.pdfIn PDF document text
    • https://rasozonikazip.weebly.com/uploads/1/3/4/9/134904665/baa39.pdfIn PDF document text
    • http://nobipobis.22web.org/charlie_full_movie_2015.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418575/normal_600242f0288d2.pdfIn PDF document text
    • http://nosaraxes.22web.org/56721170538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476281/normal_5fe840f24d180.pdfIn PDF document text
    • https://xilivixawigilu.weebly.com/uploads/1/3/4/6/134672458/e202c85863.pdfIn PDF document text
    • http://ighelperscenter.com/how_to_activate_nordictrack_elliptical_without_ifitrr0ja.pdfIn PDF document text
    • https://zoxujaratufopa.weebly.com/uploads/1/3/5/3/135399722/bf83127848e86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kekarizirisa.rf.gd/robotica_craig.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_off0000d687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 5352 bytes
SHA-256: c0fdd238820181176bf94b714fa065e5ebad4bfd8211509fbcadbe0d1c7af598
font_01_sfnt_off0000e8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CF 9916 bytes
SHA-256: adb9676b0d551663474e34adca60d7efd7672445819f73e5e9dce9d97e2d4eec

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