Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1420e9ea9bb4ea…

MALICIOUS

PDF

51.4 KB Created: 2020-10-15 07:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8724efea4723b2dadc8e15fcc4dbc2e6 SHA-1: f7eb8130a7e40baed99cb89bfe8c9cb8c1f1df95 SHA-256: ba1420e9ea9bb4ea85c44e076fe50c35fa6f0f350f7188969f24bbb968a914c4
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?keyword=demigods+and+magicians+pdf+online In PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/betakobab.pdfIn PDF document text
    • https://site-1043790.mozfiles.com/files/1043790/fukolubun.pdfIn PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/xabefiwipubigozo.pdfIn PDF document text
    • https://site-1040096.mozfiles.com/files/1040096/46669004851.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/015b16823.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/tobaridif.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f873685c6a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f870f963ab67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8708e0d4d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f8744075c569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8755aa26162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f86f5ffaddeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f87cef85bb90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f874b10f15d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f87c39cc2e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f873eeb32c5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f8762732b650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f87758b1325e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/decdc5c7-d49c-483a-9e95-6b565d3a80cf/63315536992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3edd449-4e51-4c00-b509-fbeb891d7f57/puduzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b652e9d8-4987-4909-8394-a74880401fd2/50773096935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2bffd57-315c-4759-8001-51ec2b30bf5a/64765188679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c71827c-aed3-4144-a062-08d0d513fc98/wurozilozo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B8 6548 bytes
SHA-256: 5baaf1444ec327b1979cc3410c9f468ba8c5ab97d9cf21e5b6bf9b2935dfffaa
font_01_sfnt_off00007cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEA 5088 bytes
SHA-256: a66cb2d4f8346c226227c3cff4c2f27846217161ac8eb1ffccc58ac8bdf0d738
font_02_sfnt_off00008e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2B 10240 bytes
SHA-256: 45ed6cf4d4e4a7fe8735c1335818b4629202fbc732f62ec4ad44c8a1f8180c33
font_03_sfnt_off0000b12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB12C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2