Malicious PDF — malware analysis report

Static analysis result for SHA-256 971f4ed56774aa38…

MALICIOUS

PDF

86.5 KB Created: 2021-01-06 05:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9a155b178e4da127e34f899b9f407fb2 SHA-1: ed382e5bbd74fc109906a183259cb76c6d87b2cc SHA-256: 971f4ed56774aa3892ea0718850dc48957ec9085267b9c3e699705de0f7ef4fa
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/123?utm_term=religious+pie+chart+2019'. This URL is likely used to lure victims to a phishing site or download further malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing and redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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.
  • 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/123?utm_term=religious+pie+chart+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_5fd8cdd725f9a.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/kasuwevovog/57114103483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c323a998-b262-4976-be57-b54401bf4c7d/1964390067.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/abiotic_vs_biotic_factors_venn_diagram_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/relative_frequency_histogram_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77303d3c-83d5-432d-882b-35030ffcef15/intel_wireless-_ac_9560_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d9c7cd0-a698-4bda-8c39-97ba5bb8641f/tosepawimejiwirotomusize.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/82512602625.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/koligawilamomumitegode.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_off00011385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11385 5684 bytes
SHA-256: 2d58caa68e69cd878317ebc35d580b15959a0745087f556065abfd15a51933b4
font_01_sfnt_off000126e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E1 11440 bytes
SHA-256: 1ad578fe952475d09b9f8ab4bd7082d93994e0df70e825d36e731bcd6dc46360

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