Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0103ccc08444c1…

MALICIOUS

PDF

38.6 KB Created: 2020-10-03 01:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 506ea8a1170623bb55bd2f7b4495d10a SHA-1: 2d0c4990129e7a63e62596f514dbf159f3bce827 SHA-256: eb0103ccc08444c1e2bb19bb13ccd8a3cc43387dc17d4e69370aad281c9d2994
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://cctraff.ru/strik?keyword=jazz+piano+songs+for+beginners+pdf In PDF document text
    • http://files.frontporchpuppies.com/uploads/1/3/0/7/130775050/4642970.pdfIn PDF document text
    • http://saxoziz.brizzey.com/uploads/1/3/1/4/131406226/e25202.pdfIn PDF document text
    • http://pevizaxu.the100dayproject.org/uploads/1/3/0/9/130969813/6350095.pdfIn PDF document text
    • https://site-1041183.mozfiles.com/files/1041183/66000237179.pdfIn PDF document text
    • https://site-1036921.mozfiles.com/files/1036921/57872728666.pdfIn PDF document text
    • https://site-1036676.mozfiles.com/files/1036676/12016458656.pdfIn PDF document text
    • https://site-1038454.mozfiles.com/files/1038454/tunet.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/36964733977.pdfIn PDF document text
    • https://site-1036850.mozfiles.com/files/1036850/58461575302.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3252/7526/files/zro_crack_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8621/7383/files/jemixetajufivowepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0773/7496/files/23451686396.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_off00005861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5861 5356 bytes
SHA-256: 74539af063299c5736d3c968ad6bd904d66da4c9d6fd4a3a0313eed2dabfe21c
font_01_sfnt_off00006aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAF 10320 bytes
SHA-256: 6026c4817cdfd2655424c13ddc4ef2618f13c9e97d14e1e281d9ee4712866b4a