Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ecb668799e8d681…

MALICIOUS

PDF

43.2 KB Created: 2020-09-30 19:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 16bf555b65731f625b11463085d3ea7b SHA-1: b6546c3b1c63443588d066f7ae0c26ab92f7589a SHA-256: 2ecb668799e8d6814b4d1cbca9d3323c3f08e93c5dbd4bff857987c8e431d97d
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=java+8+tutorial+pdf+oracle In PDF document text
    • http://files.firstxvperformance.com/uploads/1/3/1/3/131379434/mulovipisipid.pdfIn PDF document text
    • http://files.troop1hickory.org/uploads/1/3/0/9/130969976/sisazij.pdfIn PDF document text
    • http://taveju.cescorporation.net/uploads/1/3/1/4/131409546/2252054.pdfIn PDF document text
    • http://netefax.askafinnishteacher.com/uploads/1/3/1/4/131408024/woposiwufavipi-vuvuwox-luxapefok.pdfIn PDF document text
    • http://bibola.keeputopiabeautiful.org/uploads/1/3/1/4/131406379/a56844a7d5509.pdfIn PDF document text
    • https://site-1036834.mozfiles.com/files/1036834/83531836633.pdfIn PDF document text
    • https://site-1037033.mozfiles.com/files/1037033/jefabawaxeforitepile.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/77020211917.pdfIn PDF document text
    • https://site-1037899.mozfiles.com/files/1037899/bupetujulorekopedim.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/xajob.pdfIn PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/sukirunumerewinude.pdfIn PDF document text
    • https://site-1036869.mozfiles.com/files/1036869/navixipukoz.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/gexisin.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/28789230241.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/1/0427/7728/0671/files/35840292227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2771/8293/files/40206150387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/9883239643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8197/6990/files/95126181853.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_off000069ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AD 5212 bytes
SHA-256: b49dffd50ebfa55661ffd76c46ba22373369e2b9b243b5c94e6696ae5083376e
font_01_sfnt_off00007b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 10108 bytes
SHA-256: 41c368a42b97d56ce5e35dfed8f1d999a3b274b4d261ec00af16ddfc3c88c4c7

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