Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a92148337565386…

MALICIOUS

PDF

45.7 KB Created: 2020-09-30 13:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f8742b4c92ee2002456e662cd0a90251 SHA-1: 5b779e92bc3a084dcca2940caa805fd905e5cd43 SHA-256: 4a921483375653867250703bad094ad2fab5b8788f56377e41724361871c913c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/strik?keyword=lonely+planet+paris+pdf In PDF document text
    • http://files.annryalsart.com/uploads/1/3/0/7/130776726/bc21b35d18.pdfIn PDF document text
    • http://konitusa.brittanybalcom.com/uploads/1/3/2/6/132681670/ca022bf6cf90.pdfIn PDF document text
    • http://misiwowew.pacobuffalo.com/uploads/1/3/1/4/131406258/9267495.pdfIn PDF document text
    • http://redode.jasontorrez.com/uploads/1/3/1/6/131636746/5620266.pdfIn PDF document text
    • https://site-1038351.mozfiles.com/files/1038351/vupepogifulokodoviparisu.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/xuwozaxibavi.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/xuwidelabesineberag.pdfIn PDF document text
    • https://site-1037222.mozfiles.com/files/1037222/56372512481.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/sefosusomife.pdfIn PDF document text
    • https://site-1036873.mozfiles.com/files/1036873/40263575430.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/lezeriromugafukekunuwobod.pdfIn PDF document text
    • https://site-1036934.mozfiles.com/files/1036934/40679794675.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://cdn.shopify.com/s/files/1/0431/4556/0225/files/vejilimaraliwupil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6770/4231/files/arjun_patiala_movie_pagalmovies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/trap_and_mine_damage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/kuxagefafavajan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/37781423314.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D3 4868 bytes
SHA-256: a6a7ea82a6d67b8a76e01903f4ccd50ed22abc2f8e46ae520b398027a09f70e5
font_01_sfnt_off0000776c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 10196 bytes
SHA-256: b6bf27c67b8b7b2c628fac9a0547c8ed78719d8afeebd679c5e59384f8ae177d
font_02_sfnt_off00009a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A37 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3