Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0631a89ca3528c0…

MALICIOUS

PDF

67.7 KB Created: 2020-12-03 11:34:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f4d78763fe5d49f131a5819ed6265f60 SHA-1: 4f63f2f7d8f74458e32149c96d9717218d888c06 SHA-256: d0631a89ca3528c0036f7f70e604ee3a843db56f6af2702deba02d92815e5cd8
234 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. Heuristics indicate a PDF link farm and a phishing lure, suggesting the document's primary purpose is to redirect users to malicious sites. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://traffine.ru/123?utm_term=sceptre+tv+reviews+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f8759b9e0274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473031/normal_5fc0b2980778c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426972/normal_5fa77f6ac0ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454162/normal_5faae14de09b8.pdfIn PDF document text
    • https://vuwapelenepaje.weebly.com/uploads/1/3/4/7/134705438/2866285.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57073570fb44d1f9b435/1606375176552/takanuvexivukoxorojadib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4f781ec917750a3f1c107/t/5fc51e96eaf37e3b644015fa/1606753942197/spider_man_homecoming_3_google_docs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0efc3b8467722f1d478d1/t/5fc12c773485235c86f0e605/1606495355535/redoganetusijapuvavape.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf66401972c46e3c96e325/1606379073178/vapetexazexizudibawofuwej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e9ab409-e2df-4983-b704-aac89d81e495/zbc_hla_bu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03c409ab-e9d1-4145-b495-15f668cf92f5/songs_by_bread_the_band.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_off0000cc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC71 5216 bytes
SHA-256: f05ff6941ab3ac97d6f4e4526cf215ac54479a849d0fabaa56458985011772f5
font_01_sfnt_off0000de5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5C 10644 bytes
SHA-256: 087bb5b2d1447dc8abe04c59d1bfcf7551318a8b6849f9699dd14203cb58af11

Open this report in the interactive analyzer, or submit your own file for analysis.