Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e222a2975ca31b…

MALICIOUS

PDF

70.0 KB Created: 2021-02-21 16:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e36e1e4b07df38446c9dfb1d8bb2362f SHA-1: 7b722fd14cdcb3b0a49112f2ee119bd8d445a5db SHA-256: c5e222a2975ca31b6b3b372400f0360daece353ab5df9eb37c4420e3a90cc71c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/aws?utm_term=how+to+playing+record+player+through+speakers PDF link annotation
    • https://cdn.sqhk.co/xisalaximel/aZc8hcb/tusob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474759/normal_601ee5ab188c7.pdfIn PDF document text
    • http://mifvideo.space/11778178312w4y3l.pdfIn PDF document text
    • https://xisevulatunetu.weebly.com/uploads/1/3/4/5/134595014/6721196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366399/normal_5fcee810b4582.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/negevedivubebutaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409826/normal_5ffd59ef5fc39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377933/normal_5fd7c378a27a4.pdfIn PDF document text
    • https://mupoveno.weebly.com/uploads/1/3/4/3/134371030/7479915.pdfIn PDF document text
    • https://vasaxufunibax.weebly.com/uploads/1/3/1/6/131606743/4927ea2e.pdfIn PDF document text
    • http://tevfikyuce.xyz/denver_gem_and_mineral_show_2020_coliseumntrqu.pdfIn PDF document text
    • https://mixuzurul.weebly.com/uploads/1/3/2/3/132303374/3075731.pdfIn PDF document text
    • https://ginubeputugexow.weebly.com/uploads/1/3/0/7/130738710/dekuxijegeze.pdfIn PDF document text
    • https://lobovalosidim.weebly.com/uploads/1/3/1/4/131437181/5487306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_600c8a4908820.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_off0000d57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57B 5556 bytes
SHA-256: 290e57842116159da22d101ef54c90426c141759e744ed4c149ccb5b7990c727
font_01_sfnt_off0000e86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86D 10180 bytes
SHA-256: e8eb016db2677a4a3ccef26da547ef59899d17f58b35f978471a626e4cd6cd43