Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a592dcf9a046ce5…

MALICIOUS

PDF

45.1 KB Created: 2020-10-31 03:20:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 276b3f62ad684d792581170392c35e74 SHA-1: 6dd75359f1931b1bfc9deaa27084c0b1def6d63c SHA-256: 1a592dcf9a046ce55acf0f89c25d7cb50adfd8e56a295ed6d8d693df042c69a6
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/123?keyword=alameda+rare+mobsters'. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to lure the user to a malicious site, likely for a phishing or malware download campaign.

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://ttraff.cc/123?keyword=alameda+rare+mobsters In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/loneminovu/economists_assume_that_business_firms_attempt_to_maximize_their_profits.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/peneximexufikasov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d5972a2-408a-41eb-a4f5-02212b2b2693/utah_core_standards_1st_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/30584535394.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/50415791922.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/ardic_cable_tray_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/a_duie_pyle_bol.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/82305489929.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/zifazixugofamegowumojide.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/protected_areas_of_pakistan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F1 4732 bytes
SHA-256: df6003cba3799dfb4e54bfdf1a029d62dab1ac1a36bea6ebfcd9a37e826e473f
font_01_sfnt_off000075fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FE 10732 bytes
SHA-256: 0270ff4432f754fb65d450902f2773a3cb71b2bb81b649c77cfb19474ea64980
font_02_sfnt_off00009a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A46 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3