Malicious PDF — malware analysis report

Static analysis result for SHA-256 989ec1c1040a80fb…

MALICIOUS

PDF

72.9 KB Created: 2020-12-28 13:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7e5ba53bfaebe6e50f92afae7b75c77 SHA-1: 1bcd605dbaea800c6a7659711adfe3d42afcf705 SHA-256: 989ec1c1040a80fb68d8afcdd0c503d72af81085965fa7104745fd4483b3b9a9
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic indicates the document's content is designed to trick users into believing they have won a prize or are due a large sum of money, requiring them to pay fees or provide information to receive it. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://ggtraff.ru/strik?utm_term=6ix9ine+runner+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390092/normal_5fb44a101bdcf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449602/normal_5fcf2771a5cdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499319/normal_5fc9e9b416999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376875/normal_5fc45f89987cd.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/66b46fa8-4a47-403c-928d-60caa5c7e846/most_sold_console.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1efd6f2b-c1d7-4911-bdb7-b8675e5e451b/navoribipototitozigifowu.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/guwir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fad969e2-429d-4bd4-aee9-f276c481428d/vewomikisebadevemonezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e112b4-41bf-4288-90af-35fd9881a5c3/71943258612.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_off0000e056.bin
642afda9c641f1256c17891c9c7acc0c42b76655b10ce956eced05a3541528e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE056 4884 bytes
font_01_sfnt_off0000f101.bin
c6cba3e12c85ec0ecb51c3e5f9763d485d3e562edcf88ea8c294e458a375d5ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF101 11420 bytes

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