Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6a9ec1ef25e6ab…

MALICIOUS

PDF

38.8 KB Created: 2020-11-08 17:25:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 4806cb3349aa2068ca7872e3ca6c36e6 SHA-1: 254261ec93be0afaffec4c77fcaf1ea8fcca9e07 SHA-256: 4a6a9ec1ef25e6ab7e9edbd3ea5ed4127b5abba44e21101ec48b40c8b5b003c1
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://traffset.ru/123?keyword=top+tier+gamers+baseball PDF link annotation
    • https://botakukejase.weebly.com/uploads/1/3/4/6/134610266/logujovanega-famorivikubamas-lufatareweduroz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_5f8fce4a59ba7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5fa75f4e40128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f8e2d88906ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450501/normal_5fa6d0153f176.pdfIn PDF document text
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/72515c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_5fa0669e3310e.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/9826c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://duwozonitumo.files.wordpress.com/2020/11/bubegif.pdfIn PDF document text
    • https://sizixef.files.wordpress.com/2020/11/23789597695.pdfIn PDF document text
    • https://fodabijiwifi.files.wordpress.com/2020/11/how_to_breed_a_toe_jammer.pdfIn PDF document text
    • https://muzidageje.files.wordpress.com/2020/11/90015052176.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/python_hash_table_vs_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/free_way_to_edit_documents.pdfIn PDF document text
    • https://rugofiw.files.wordpress.com/2020/11/veda_mantras_in_tamil.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_off0000579b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579B 5228 bytes
SHA-256: 9be1246519df7f58bd1714b4ed42609d99afcbf1953520a70773b7a7d540a866
font_01_sfnt_off0000694d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694D 10788 bytes
SHA-256: a5435693a0169419614684f1dcc6eb340aea4105e4eaefebc09b33e5f7f50eb6