Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b95e12fb9e3512…

MALICIOUS

PDF

52.7 KB Created: 2020-10-12 14:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 27816de1602c6e00e55abed0182a53ed SHA-1: 644f480afde4fbc3566c091bfd2696c7350e0458 SHA-256: 94b95e12fb9e35125caa528d0ea024aa53eaeda35f95262b3b6ce0a5f33f427d
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://cctraff.ru/strik?keyword=neumonia+hipostatica+tratamiento+pdf In PDF document text
    • https://site-1038944.mozfiles.com/files/1038944/38911818329.pdfIn PDF document text
    • https://site-1048485.mozfiles.com/files/1048485/72583390393.pdfIn PDF document text
    • https://site-1042539.mozfiles.com/files/1042539/totefuvitalitiro.pdfIn PDF document text
    • http://tuzop.haexperts.com/uploads/1/3/0/7/130775565/9ba8ca1718dd.pdfIn PDF document text
    • http://files.jenniferchapin.net/uploads/1/3/1/4/131453576/2504484.pdfIn PDF document text
    • http://files.lindabutlerphoto.com/uploads/1/3/0/7/130775949/digirebavaba-migijima-gomajoxivise-desarexiwi.pdfIn PDF document text
    • http://files.equineexposure.ca/uploads/1/3/1/4/131453048/5579523.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/1/0436/2820/0096/files/blackstone_flat_top_grill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6251/2802/files/transmission_speed_sensor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3cce30d-4256-495b-bd33-df3066515e94/59062445425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10a0482c-805f-45f9-9546-9df13e37eb20/zivofazinolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1821e6c3-7738-46d9-acb9-72e2c86cc61a/famebutofazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e68cc296-60a7-4bdf-90f5-d14e57fa085b/geripinipur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37964f2c-459a-4834-a9c4-f09e27e7d4f2/digiwekirobuda.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC3 5332 bytes
SHA-256: 7b6957f9e615a52dac50a7b1e36f47400c14ac98c7e53acb341977bd1f9e26bc
font_01_sfnt_off00009eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB4 11720 bytes
SHA-256: 828e4e445bc0864dd5504ddf138db8b73e47e0bd24c6fb6808765e6f5b1b2f63

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