Malicious PDF — malware analysis report

Static analysis result for SHA-256 481a01229ed03c75…

MALICIOUS

PDF

44.6 KB Created: 2020-11-04 16:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9b46ea4847cfc737505da491a38e86c9 SHA-1: 10c251afcd9c919dcb55d9b0bdaf2808b143ac3e SHA-256: 481a01229ed03c75a08cbd21537a1b895642dc916f9a9b1f48b7a78e8b98d26d
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://gettraff.ru/strik?keyword=tri+state+recovery+wv In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5f8b72c534ab3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5f969e83e71de.pdfIn PDF document text
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/38fda2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f8e67d7dab40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383308/normal_5f8bc9926cb57.pdfIn 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/wekibik/lozad.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/sword_art_online_progressive_6.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/pivuwejekinovivut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/57794426090.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/76567730366.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_off0000648e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648E 4648 bytes
SHA-256: e0c7fbc71d9a4762905c8e932e54ebea7de51dc4cd4d77570b129127ebedce54
font_01_sfnt_off00007478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 10592 bytes
SHA-256: 4ca30ce8d17f10042a5a276bc64983427dd7703a55db829669852b24d86a1b96
font_02_sfnt_off0000985a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x985A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378