Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b1c86b9c52188f…

MALICIOUS

PDF

66.6 KB Created: 2021-02-14 02:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cd6f04958725e67f63b9e4987c0a96c7 SHA-1: 37b2b3a0cce6df607ed20b9e12977439eae9abd1 SHA-256: 17b1c86b9c52188fe59ba10374adfcd64865c7644f0cdef234b58c25dbafe100
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://maypoin.ru/wix?keyword=sion+vs+camille+reddit PDF link annotation
    • http://nextauto02.ru/dmbok_free_downloadgaad2.pdfIn PDF document text
    • http://telgrm.site/cs_4590_gatechkrnxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476766/normal_601d6fb14bcf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5fdc73594d15a.pdfIn PDF document text
    • https://xinulirolome.weebly.com/uploads/1/3/4/5/134599248/sumowoduneba-kafejokalipifu.pdfIn PDF document text
    • http://wisitens.online/cocktail_semi_formal_dress_code_malej1pec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_60119bf10bc8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372753/normal_5fe0ba73ebcee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5fd9d93f43fb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408721/normal_5fff757a989e9.pdfIn PDF document text
    • http://lbaranaydin.com/ocean_dreams_marina_spa_villas_lanzarote2gd1m.pdfIn PDF document text
    • http://creditreportusa.info/3d_car_making_software_free7ipou.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_60256caf447e5.pdfIn PDF document text
    • http://mifvideo.space/curso_de_guitarra_acustica_para_principiantes_gratis1f11v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382408/normal_6011445781c7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448733/normal_6015abb488dd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_6024c54a0a621.pdfIn PDF document text
    • http://sexedate69.site/christmas_cake_decorated_with_candy_caneseqasg.pdfIn PDF document text
    • https://lowezikalazana.weebly.com/uploads/1/3/0/9/130969016/28155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446015/normal_5fdb02f301f6d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC968 5248 bytes
SHA-256: 95a5de7c02dbabbe250b41478c82339bbbd6b061e228cfda2060cad8f5b65d58
font_01_sfnt_off0000db29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB29 9936 bytes
SHA-256: 93c8900357d6cedc6e905791ef74e5a8e20dd62ac2efdaf3ea3968b340195356

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