Malicious PDF — malware analysis report

Static analysis result for SHA-256 e069add8d8617f71…

MALICIOUS

PDF

52.4 KB Created: 2020-10-07 22:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 373e3c31937bb0300ae594a5b7370744 SHA-1: 80483c3cff6df53e7d8f4bb99884ac7b0a231be8 SHA-256: e069add8d8617f71e6999ccab5b0594126847dc4387753b903a6abd5f5214ee0
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=fundamentals+of+database+systems+sol In PDF document text
    • https://site-1039344.mozfiles.com/files/1039344/vatoba.pdfIn PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/58332930129.pdfIn PDF document text
    • https://site-1043033.mozfiles.com/files/1043033/33624362895.pdfIn PDF document text
    • https://site-1044291.mozfiles.com/files/1044291/76845205718.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/8136896818.pdfIn PDF document text
    • https://site-1043329.mozfiles.com/files/1043329/90660580081.pdfIn PDF document text
    • http://files.babosamerebhagwan.com/uploads/1/3/2/6/132681342/d3fb5354f6.pdfIn PDF document text
    • http://files.kengoesclick.com/uploads/1/3/0/7/130776142/rolijudomidis.pdfIn PDF document text
    • http://files.msfirephotography.com/uploads/1/3/0/8/130874676/7662538.pdfIn PDF document text
    • http://files.customcreativemarketing.com/uploads/1/3/1/1/131163492/xetepegatejuk-nikibobegejapek-kidinok-lodiwalaz.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/6550faa4-f0b0-4130-aae3-7c110ad92b35/88388380363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e96ba7-11ff-4bd9-9653-5b5a63d169e4/74798575858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ba55b8d-39a7-4097-a54d-cfceafd6c1ca/48189615069.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_off00008990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 5156 bytes
SHA-256: 0b0ef133a0e8c17dd867a01a3d4ad9270609f342d011896a367a9e579d077b53
font_01_sfnt_off00009b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B16 13216 bytes
SHA-256: 683c54125fd1bfaeb715cd3188a7edd53aa0e8ee02071dba1e68d2698fa160b7

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