Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e2eebf2ff9c891…

MALICIOUS

PDF

52.8 KB Created: 2020-10-28 04:25:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 586fc900afd6cd24e57e69509e2e520e SHA-1: 1050cfeb92a5c95dadca77acf238b31bdaf84c44 SHA-256: 04e2eebf2ff9c891a7026645f520d3535033df954741efeb62bec997bc72e302
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=mach+5+cartoon In PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/7320533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5f8865a1eafcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_5f928402ed7be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f87123cba94c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f8a0d684921b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8e69ff99be9.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/xurixado/18698856148.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/rerujogepepafenudexuniso.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/blister_packing_machine_change_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/9856360475.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/57389294688.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/icici_bank_loan_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/application_form_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/fanefep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9756/5598/files/87956403975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6767/5302/files/27372481504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9946/6142/files/82580595103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/5780601165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2758/3135/files/72669836489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4efce1b6-c679-47bf-925e-477f0d3ee2fb/wupevaxemukowob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d8f05e-5150-445c-8c10-3ae2382134f5/24334084989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebebaa56-03bd-4147-a09a-1d865f312658/28343188608.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_off00008344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8344 3232 bytes
SHA-256: 18911abef900225e113cbeb26347c1758a85f413ce7545f214fa8d613d2af4b3
font_01_sfnt_off00008eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 4804 bytes
SHA-256: 721a04b83736aa3f1082029511161b0a4369d635fd64e8bc3059644da7b09d81
font_02_sfnt_off00009f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3C 11632 bytes
SHA-256: 888cb73b3d3eaebbf6aae23211206026908af3971ac4bc96722cf16c226ea4af

Open this report in the interactive analyzer, or submit your own file for analysis.