Malicious PDF — malware analysis report

Static analysis result for SHA-256 091aa22f060d567e…

MALICIOUS

PDF

39.4 KB Created: 2020-10-28 01:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 11049160f98e214cc56817a3b843d237 SHA-1: d2e97094863a4816d7bc688176697c515e016d81 SHA-256: 091aa22f060d567e433c11c4adc7aa2e69c86a2945eda4da32dea1b1dd3f7380
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=half+blind+dovetail+tool In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5f8c6d07aea0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f872387f1399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f8d30c9c6ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f8c095fb8fbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8f9036ec455.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/dadupawo/answer_to_complaint_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/jonilol.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/lic_jeevan_tarun_834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ebf977f-8b39-48c3-8ec7-dd1a21c26742/60517532446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7c0598-9f4e-4175-b452-525fd8c1e242/61597651693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8814/3038/files/13370852414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3021/5317/files/zifugedilep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8232/7230/files/minecraft_witchery_taglock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/poleralopojodopew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8104/files/gupetusadadipuwisediku.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_off00005d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6C 4788 bytes
SHA-256: 0fc460a1c3aeffcd9d22c9802f2c4516a0c506ae479a9c22abc8f3b29f8d525d
font_01_sfnt_off00006dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD1 10308 bytes
SHA-256: 82b6cf98340051e6534737d5677b6fe04e77e7446d37fd2894f03c906764f8e2