Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca6f2c9283ff883…

MALICIOUS

PDF

41.9 KB Created: 2020-10-03 00:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 47cad1798ff3e734b50b0f5f3767a43f SHA-1: abb3c4ca467d4fe864f355f9335f9e4550b95213 SHA-256: 2ca6f2c9283ff8830e2ba1ba206baaaf1d4398c01b72837bb7807208244a9aa2
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=life+is+strange+lesbians In PDF document text
    • http://files.eternalroundring.com/uploads/1/3/2/7/132712324/4369950.pdfIn PDF document text
    • http://files.renattaazzam.com/uploads/1/3/1/4/131437792/tadinugi.pdfIn PDF document text
    • http://pizodado.life-modusoperandi.com/uploads/1/3/0/7/130775350/lasapexuzijezex.pdfIn PDF document text
    • http://files.pipsqatar.com/uploads/1/3/2/6/132681824/8638102.pdfIn PDF document text
    • http://files.azjnblue.com/uploads/1/3/0/8/130814408/nasuxobar_pafogitino_gaxaruvu.pdfIn PDF document text
    • http://files.eastmen.hu/uploads/1/3/0/7/130739895/6665199.pdfIn PDF document text
    • https://site-1038919.mozfiles.com/files/1038919/bodoxapebijitunumifiju.pdfIn PDF document text
    • https://site-1038932.mozfiles.com/files/1038932/30091563300.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/93571276643.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/1/0437/6667/7665/files/baptism_prayer_for_godson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2677/7765/files/64214061098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3112/2079/files/14465052747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/34335158067.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_off000066f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F3 5016 bytes
SHA-256: d265a47b30612365f9256fccd4adf08e19171e6fa4b24fded11f6ec41b053908
font_01_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10232 bytes
SHA-256: 99a6e9f5001a0dc41ab909dce8cf3dc5d5a49caae622a77c36f907d2b6b3ee81