Malicious PDF — malware analysis report

Static analysis result for SHA-256 73aed8ae32074070…

MALICIOUS

PDF

45.5 KB Created: 2020-10-16 17:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-02
MD5: 59e50768754cee02b23b35634d693918 SHA-1: f17be1df54a94003af281bf5371417702531890e SHA-256: 73aed8ae32074070bc908a33cfe93eb0920465116437697a3c10d23e99d4207f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.link/pify?keyword=permanent+record+edward+snowden+pdf+espa%25C3%25B1ol In PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/zupaxevekod-puzig-reluziwajit-rubutipos.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/cc60ce86063c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f871255dfd41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f87aa83eaadd.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/rixuge_kugodusegatafu.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/fuwadujer.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/pebabaxopurode.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/muruwuximusovid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f8716af85e8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8705f63c17b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f8960a562b02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f892bbfcf535.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006d76.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006d76.bin)
    • https://uploads.strikinglycdn.com/files/96106492-2d0c-4700-ae8d-e8ca3729e35c/veralobekofepetegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6537650e-58ec-43d3-919a-4175f8445d90/73978589186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d7e3eeb-68a5-4efc-b7cb-747ee0edc2f0/memivakibix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb9dfe61-f348-475a-93bd-19aa1dca9cd9/31963050010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98b8214-d7bd-47da-b1de-172963b042bc/36595755374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cb60d60-dea1-48a9-b23d-9c2a14fe69d8/gudenezud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91091f77-2cb6-4a7a-ac09-0d46041522e8/68011246608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3eb936f-a612-40fa-9be9-68f4f935df8a/7081998235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f6c1592-14b2-47f1-8d0c-d93b42ff29e3/34933018402.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 extracted file (font_00_sfnt_off00006d76.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 5604 bytes
SHA-256: 20d1747fbe7ea00163058353ecc0c350fd0bee0af7c5683eb4bdc402a6bd1342
font_01_sfnt_off00008038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8038 11212 bytes
SHA-256: d23a81dd38a9835736f44b6dbc65ff8577559bdee031483811e9feb22ab69a2d