Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b35e5cf171ec442…

MALICIOUS

PDF

58.5 KB Created: 2020-11-02 20:08:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0a3d52ea9e95ce70db7d0e5033c9373a SHA-1: de43b228ce56b07a8c9a6e62bfbc4a990609b24c SHA-256: 5b35e5cf171ec44295c34b6c5fff7fca1b654ff75db6a24185c46af92d3b8cfe
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.com/123?keyword=one+point+perspective+drawing+videos In PDF document text
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/jilufo-mivejilaxukuf-vajaxobonewij-valolisot.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/2ce436abcd.pdfIn PDF document text
    • https://tenasusuboziwid.weebly.com/uploads/1/3/4/3/134349012/daretokujunavupif.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/cea5a2bb-c190-4f88-9f01-8468d1d76d8c/arena_simC3BClasyon_proje_C3B6rnekleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a1815ad-2d64-4510-bf2f-df20ebcde89d/93243640417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45729129-b8ae-4c50-8112-2922be12af9a/momonukimitevilulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1a1d17-7717-42a1-bf94-289192770ddd/37809304792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/376dae39-87e3-4b0a-b4f1-b02ff53e983e/uppers_downers_all_arounders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17282b39-3378-47ad-8acc-41ad916f594c/77037711229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9f2517-9143-416a-b249-52e935a5a60e/pemifuwupuwabukitepo.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/gidetegedifapelukijibunel.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_off00009dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCB 5388 bytes
SHA-256: bf74c3402faa046bf2b087b32951b58b1e1728f0c9b044caed0a914e34033b2c
font_01_sfnt_off0000b03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB03C 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off0000b8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CC 10496 bytes
SHA-256: b6bd81569539a3bf24a06b7d5cbc555555a03e0bd6ebee0760612d2d8155416a