Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e4823d0e1a9333…

MALICIOUS

PDF

65.5 KB Created: 2021-01-01 05:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7c5624c5e7ea6eb0f01266d731ee0b3 SHA-1: 734ab3c24f505427864a6331c7c8108dae8b0f43 SHA-256: d1e4823d0e1a933321f6ab1b41b605f502ea99d729cc0110ac7e5bd0bb30c065
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic firings indicate the PDF is designed as a link farm, likely to distribute phishing content or malware. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9627

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
  • 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.
  • 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://gettraff.ru/strik?utm_term=mobile+png+logo+hd In PDF document text
    • https://sipelebe.weebly.com/uploads/1/3/4/3/134312525/7350623.pdfIn PDF document text
    • https://judikudaxu.weebly.com/uploads/1/3/4/8/134878276/ramuzogibozu.pdfIn PDF document text
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/6025864.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/kamosad.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/jjthamg/90148914622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/dovunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1d12a23-2d5d-4e9f-a41d-07dc3ee3b3a3/45732771053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98817a9-42a7-49be-be31-5e96e933f9f6/rogik.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/wickes_furniture_il.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/81055584892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c1e3ff7-698c-4a43-8138-d28fb0b19a96/jokulekilebosutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae22c326-9f31-4983-985f-b3f8f65b8664/wufoxafop.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_off0000ed48.bin
2490b35fc0c347392ca9de1bf7a2836ee16f46a2505fb417727295a3434bd443		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED48 4588 bytes

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