Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa0872ebbda20f9…

MALICIOUS

PDF

56.7 KB Created: 2020-10-28 18:31:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: eb7da9fbff8e191e6cd46948fc077ca1 SHA-1: 77f23073ab921c85bb71d4f0070a1eb3aebc04e8 SHA-256: aaa0872ebbda20f9610a8566ffc5c72ce3713a2d2d46e63d77287d1aac3a7a38
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised with keywords related to 'liberty bankers life final expense'. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/strik?keyword=liberty+bankers+life+final+expense In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f932538d08ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_5f8c84996f041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f93f31d144df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f97e963e407a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_5f896b291586c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8754b5d8dc9.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/3d7ce9aa-4a43-49bc-9dbc-93cad8be2600/10538525389.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/koguvovare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76e994f6-9cce-4490-9970-46620fa409b2/lizitote.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/22945295749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8326/0838/files/west_quad_study_abroad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9135/4534/files/99555818502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/6631/5714/files/jagevaxab.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/msc_botany_practical_book.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/bizhub_185_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9018/8722/files/26330235306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1147/2064/files/converter_em_excel_free_em_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/40708141787.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_off00009ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF6 5212 bytes
SHA-256: 9afeec63a1394327c41d0c5109faa32f6fe9f95925be67903ac8beb705c2537c
font_01_sfnt_off0000b0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CF 10788 bytes
SHA-256: 53e524190364e35890baa3d7ed285182d48618641dfc36fe91b1a75c833c2116

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