Malicious PDF — malware analysis report

Static analysis result for SHA-256 64585406a6a9fecd…

MALICIOUS

PDF

48.8 KB Created: 2020-11-08 01:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1e0c9706515d838ac8966c50d43b7e67 SHA-1: 2f67e601e5f21cf974972a788b0e074892479833 SHA-256: 64585406a6a9fecd1dd732a958b195296b9ad2964ecb4f592c68c3d0cb78dae0
264 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF document contains a lure related to 'League of Legends' authentication issues, directing users to a malicious URL. It also includes instructions to disable security software and execute commands, indicative of social engineering and security bypass tactics. The presence of numerous external links, many hosted on disposable domains, suggests a link farm designed to distribute malware or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/123?keyword=league+of+legends+stuck+at+authenticating In PDF document text
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/369826.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/rususe_zusarareboti_nuvovupa.pdfIn PDF document text
    • https://wopuremob.weebly.com/uploads/1/3/2/6/132696580/04530c5574bc7.pdfIn PDF document text
    • https://zirasave.weebly.com/uploads/1/3/4/0/134096010/5538531.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/4576144.pdfIn PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/4953244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5f8fe4afdc3fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bedaxabop.files.wordpress.com/2020/11/xabidibiw.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/61569988736.pdfIn PDF document text
    • https://botebofeji.files.wordpress.com/2020/11/15963812645.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/vehicle_dynamics_simulation.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/textbook_of_radiation_oncology.pdfIn PDF document text
    • https://tisobex.files.wordpress.com/2020/11/xaxuruwimutigeger.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_off00007ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA3 5192 bytes
SHA-256: 6c9455c791d9411e5045faad2a2c40786a85ce783419d08188a4b5e6c87bcad4
font_01_sfnt_off00009058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9058 11444 bytes
SHA-256: 0f28fb9f2cc3d8c59ce966304bc8b001899012345551085ac5fc0275cf562022

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