Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3b792e5b3350515…

MALICIOUS

PDF

47.2 KB Created: 2020-10-03 20:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 05037aebbd4e7c45d1180de7e59a5bd2 SHA-1: fff749ab611f75293452468eaa470ad381e59a6e SHA-256: f3b792e5b335051556d0779300bc15d7082443033d8c2e81ce8128982a15de5e
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=gta+san+andreas+%25C3%25A7i%25C3%25A7ek+hilesi In PDF document text
    • http://files.hotfootstompers.org/uploads/1/3/1/3/131397946/jexize.pdfIn PDF document text
    • http://raxotoxit.cheltenhamprintguild.org/uploads/1/3/1/0/131070374/nagukox.pdfIn PDF document text
    • http://files.sldreads.com/uploads/1/3/0/7/130739309/7116853.pdfIn PDF document text
    • http://files.craftyfoxx.com/uploads/1/3/2/6/132681278/d32fb14078a.pdfIn PDF document text
    • http://files.familiessharinghope.org/uploads/1/3/1/6/131606666/jufibogotuvumexateb.pdfIn PDF document text
    • http://zibijajun.williamklaesson.com/uploads/1/3/1/3/131398164/zubapaj.pdfIn PDF document text
    • http://kakuguwoz.thomasnazario.com/uploads/1/3/0/7/130775166/dexokokemud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ea8c84-76c8-467b-9498-1b29e8eae802/wulupifapesebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5648dc-d6b6-46ec-bb5e-e7690541ffde/mison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d85b55b-dd22-45b8-aae2-e79ebdf65061/mipodobekivate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cebc2183-5b30-4feb-bc1a-8887bd6ce85d/bifalofoselutuduzali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/144d5f5e-6c60-4818-b01b-137aee446041/84108428301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/ripebuvinufozejabowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9369/1041/files/51911928738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4053/7750/files/social_changes_after_the_industrial_revolution.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_off00006a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A70 5192 bytes
SHA-256: b57a6b2be9e5f9b788db840a1bdd6d9cba633e5920c3546159579697c442debf
font_01_sfnt_off00007c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C11 17244 bytes
SHA-256: 8c98ad05cc0f3f8449ab63ad665f6a3611052db7d1a3ca7cc2b4898f8f071018

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