Malicious PDF — malware analysis report

Static analysis result for SHA-256 22befc5d688daf11…

MALICIOUS

PDF

97.8 KB Created: 2021-05-10 05:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 49c729c168a26391c562f32fe4be6090 SHA-1: 58cce2e6e00617445e8ed4333874b21445dc0d1c SHA-256: 22befc5d688daf11ee0221f358d7fafacc5d08778caba08a3b83511bbbde43e8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that is likely part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the nature of the PDF content suggest it's designed to trick users into downloading further malicious content or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/strik?utm_term=forex+trading+fundamentals+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392452/normal_605b9b1f5f16e.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/20645498037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467007/normal_5ff51d9d20d1c.pdfIn PDF document text
    • http://nepatokada.mypressonline.com/lopanebaledelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461483/normal_602e373578cc9.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/retuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_6023dadb87a39.pdfIn PDF document text
    • http://xteenware.online/21609979417p5cj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417403/normal_6006b80935e4a.pdfIn PDF document text
    • http://nominasacra.ru/32207789222u5m73.pdfIn PDF document text
    • http://cosmosqrab.online/kutexofepasinoserisgdkg8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405654/normal_5fc56db320401.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459054/normal_6003c713d2272.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382429/normal_5fe10fd4422cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415308/normal_5ff7141a9acc0.pdfIn PDF document text
    • http://dabedera.mygamesonline.org/madame_blavatsky_secret_doctrine.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/6151e3e2-27b2-40fe-ae4f-7c381c6c8538/18962033442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4856b0ba-b7e5-4edb-a5fc-be689d8a7779/podigupikufisajegowoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/405d6225-42ea-4a2c-9f49-d3bd5974baa9/gojedesabugururega.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/delf_b2_alter_ego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a8f714-a60b-44aa-9ebd-f11c719da716/goxagozokekebeluga.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_off00014025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14025 5384 bytes
SHA-256: 80c39a2bf4ca63860d1f1fb37a17179d587e4e4ba0b39bc8d4559a59a9d70e7b
font_01_sfnt_off00015272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15272 11616 bytes
SHA-256: 8f0333680ca59c458ee5af9c211dd5d66ff4955ad091e811315339d21ad99bde

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