Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7517ed4f31acee3…

MALICIOUS

PDF

43.5 KB Created: 2020-11-09 09:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 06334038eb902742e865512494cddad3 SHA-1: 83f4fab2cf42376979fa43cc0b45055597606373 SHA-256: b7517ed4f31acee3b9f2ec337f8cb264aaf3426823b9076f18aa63d18c44a720
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/aws?keyword=exculpatory+language+in+informed+consent PDF link annotation
    • https://mawajajapok.weebly.com/uploads/1/3/4/3/134353668/e0efd5fc.pdfIn PDF document text
    • https://miboxijudowisu.weebly.com/uploads/1/3/4/4/134491333/lesalevivufarixe.pdfIn PDF document text
    • https://wenilitedosi.weebly.com/uploads/1/3/4/3/134315728/2050042.pdfIn PDF document text
    • https://sigoxavofilaza.weebly.com/uploads/1/3/4/6/134697452/5616054.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/08647.pdfIn PDF document text
    • https://tovorugezix.weebly.com/uploads/1/3/4/5/134599805/3d06d20d6d.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/3855408.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eeb23d5-ddb6-4096-8941-78ce1cdd9e84/56482370894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5f370d2-82fa-4732-ad17-405a38f18731/24498187027.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/lobivowevolodo.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/job_spell_magick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483a0de6-f858-4cdb-b86e-730296393944/13712396443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4dbb2fd-1edd-4d2b-886c-936545aa3c4c/99264111811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36922c7a-7d37-45b4-8d3c-ec4698eafb7e/27063045440.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_off000069c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C0 5604 bytes
SHA-256: 1c3bcd002b90f0ccc37e50ef38f02bf89d7ff0daa1908ebed1b98b68836c8955
font_01_sfnt_off00007ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCB 10584 bytes
SHA-256: c16dc16cf743fa25b993e448500929a2fe04b82c16cebece0c6c3ff1a99dbed6