Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b074675650c357…

MALICIOUS

PDF

34.7 KB Created: 2020-11-06 21:05:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 74efeebf5311c3a6c11fbe33b169f2f4 SHA-1: 992410251887d7c353b58d3a23804f64cb68ab7e SHA-256: f4b074675650c357f2db275a3b6fa565dacd7a858fad1a02ecf10050ba9495e7
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to redirect users to malicious content, specifically advertising a download for Minecraft. The primary malicious URL identified is https://cctraff.ru/aws?keyword=download+minecraft+pe+version+1.15.0+apk, which is flagged as a redirector to known malicious infrastructure. The document's structure and numerous external links suggest a tactic to distribute malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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/aws?keyword=download+minecraft+pe+version+1.15.0+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f98efb117de8.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/ragoder_sovose_vulufi_tutixap.pdfIn PDF document text
    • https://mutimerujufidi.weebly.com/uploads/1/3/4/5/134526942/sulujokagabu_rirumusabuwo_kevizebax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f8d81eb1b139.pdfIn PDF document text
    • https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/ab812164038b.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/rasavef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_5f93efe1ae584.pdfIn PDF document text
    • https://takotifisusa.weebly.com/uploads/1/3/4/4/134499816/163057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459036/normal_5fa4037b3381a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455890/normal_5fa2fea296b64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421783/normal_5f9a30767dcbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8b2b7b164ff.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/zikugugimux.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/6e9f518a-9b98-4987-8d00-eb9b0d3a1a43/roret.pdfIn PDF document text
    • https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f577f053-1922-4622-b505-884b37b18acb/23182321206.pdfIn PDF document text
    • https://siwereja.files.wordpress.com/2020/11/74219477726.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D03 5868 bytes
SHA-256: 25d25951d6ea5127c1a40c933e6f3850f0be7a585d759f173837581bc59bbd77

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