Malicious PDF — malware analysis report

Static analysis result for SHA-256 db063dd39b9a7ae9…

MALICIOUS

PDF

37.6 KB Created: 2020-11-07 04:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d3d134c0910ef0af01f998ba5547e8e7 SHA-1: e4efb2a09d070dc37945b846ccb2d7a0d336a9c0 SHA-256: db063dd39b9a7ae9e710519154ef931c72093cd5fbada25442f4eaef0d194448
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://traffking.ru/aws?keyword=mitsubishi+montero+sport+2002+repair+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379240/normal_5f941bd9b5d1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f98ff6515ddc.pdfIn PDF document text
    • https://lujetuzamuja.weebly.com/uploads/1/3/4/3/134372728/328062.pdfIn PDF document text
    • https://dogirewepa.weebly.com/uploads/1/3/1/8/131856222/7403156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8755be3ca68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f899120628c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5fa2cc7b9b224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f9053f70b4c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wepigun.files.wordpress.com/2020/11/nopevifivibilemafelifix.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/singer_ray_stevens_age.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://jazefev.files.wordpress.com/2020/11/manually_update_wordpress_plugin.pdfIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.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_off000055a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A5 5480 bytes
SHA-256: 32b17bd86ed991c5a1bb9cdef256dc645acbedcf3a8c69bf2ae86aaf78e07f3d
font_01_sfnt_off0000681a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 9776 bytes
SHA-256: 2b5188ef4d7e36f82de032b484d8297ca9d1f7f56adba286e37e01178490cd89