Malicious PDF — malware analysis report

Static analysis result for SHA-256 0014338f6e00726d…

MALICIOUS

PDF

38.4 KB Created: 2020-10-03 08:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01c8c4917f84e6b6936ccb24f68cd590 SHA-1: fe0ff333bbd35cef861594678023e6589dbe52fd SHA-256: 0014338f6e00726d375015e96bd47368417141b59753a75233b02c9d46f2d3af
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://gettraff.ru/strik?keyword=barron+essential+words+for+the+gre+pdf In PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/wajunezisofunifesiber.pdfIn PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/livifew.pdfIn PDF document text
    • https://site-1038573.mozfiles.com/files/1038573/50166606932.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/luwuwiresadole.pdfIn PDF document text
    • https://site-1040002.mozfiles.com/files/1040002/88606258331.pdfIn PDF document text
    • http://joraxen.mymisssparkle.com/uploads/1/3/1/1/131163667/xifafit_penowepiroluw.pdfIn PDF document text
    • http://files.stephenquinlan.net/uploads/1/3/0/8/130874233/36952.pdfIn PDF document text
    • http://files.sistereducator.com/uploads/1/3/1/6/131606494/7515b9.pdfIn PDF document text
    • http://batubazek.spooncaterers.com/uploads/1/3/1/1/131164250/8872007.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/1/0434/9978/2309/files/youre_ugly_too_lorrie_moore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8624/4757/files/poisonous_spiders_portland_oregon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7733/6224/files/lonezedifefezit.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_off000056d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D5 5444 bytes
SHA-256: 38fe9092a561006a64ad22d9adc5e4fba95ff856ed1141410d9e48f9929549b6
font_01_sfnt_off0000696c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 10480 bytes
SHA-256: 3a905db0e43b434e53bc2ea26265aa8347ce16e8e85c716309efece9bddd668d