Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ca397d6d442a0d…

MALICIOUS

PDF

54.5 KB Created: 2020-10-13 03:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-25
MD5: 1d0da6c69bc0373064bea7b2cbe629be SHA-1: 584d0f1564055a2966f2843093040ea7d1b27281 SHA-256: a9ca397d6d442a0dd0466a36fdf09d22ae8a46efe8e6e55df9a71e2b19c8004f
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://ggtraff.ru/strik?keyword=flora+y+fauna+de+pacaya+samiria+pdf In PDF document text
    • https://site-1037005.mozfiles.com/files/1037005/54039597339.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/88911357374.pdfIn PDF document text
    • https://site-1037906.mozfiles.com/files/1037906/53949963055.pdfIn PDF document text
    • https://site-1039315.mozfiles.com/files/1039315/4401278369.pdfIn PDF document text
    • https://site-1036751.mozfiles.com/files/1036751/sadoduxamosujudokopubin.pdfIn PDF document text
    • http://files.kaelymonahan.com/uploads/1/3/0/8/130814926/1974476.pdfIn PDF document text
    • http://files.steinuvisualart.com/uploads/1/3/0/8/130813025/179c3306.pdfIn PDF document text
    • http://nufez.servingwithjoyhealer.com/uploads/1/3/0/7/130776854/513350.pdfIn PDF document text
    • http://files.farmontheprairie.com/uploads/1/3/0/7/130739836/8453480.pdfIn PDF document text
    • https://site-1039684.mozfiles.com/files/1039684/sizezasaluropevoweve.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/85173319119.pdfIn PDF document text
    • https://site-1043324.mozfiles.com/files/1043324/64304467250.pdfIn PDF document text
    • https://site-1043037.mozfiles.com/files/1043037/vaxibiroveki.pdfIn PDF document text
    • https://site-1042585.mozfiles.com/files/1042585/zekixidenotu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000950b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000950b.bin)
    • https://cdn.shopify.com/s/files/1/0266/8337/5786/files/buenos_dias_princesa_pelicula.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_01_sfnt_off0000950b.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000835a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835A 5144 bytes
SHA-256: 71d19241764c083b723ebe222b2c137083edad3e21cf9a00db2f348526562388
font_01_sfnt_off0000950b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950B 5360 bytes
SHA-256: fb7e7fa6b23096e4425c5f4d7f31dfbb68ff8584a7050650d353407f2928c2ce
font_02_sfnt_off0000a739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA739 10392 bytes
SHA-256: c07d21e9dfc1064df902e50a14ba85501cab3614fe97e862c17b8de214aa47f6

Open this report in the interactive analyzer, or submit your own file for analysis.