Malicious PDF — malware analysis report

Static analysis result for SHA-256 734049e2d48c5363…

MALICIOUS

PDF

50.1 KB Created: 2020-11-03 17:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8e6a17f3e8b98aa4f96ff566838f60c7 SHA-1: 9354aa984bbd2f38c133695110151ea4674250d2 SHA-256: 734049e2d48c53634df1872bf55ef988d6fa26e1bdb9aa466de91d09ae89e409
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=37+inch+tv+stand+mount In PDF document text
    • https://mitixofixomu.weebly.com/uploads/1/3/4/3/134333727/wasigenarilelod_dekukov_lezup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f8e4c5ae769f.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nuziwozonugof.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/deneb.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/nodarejosojenaxokif.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/e1ad4d60-c03c-4f96-a519-4abda2650af7/36910920426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e41a7e15-f78f-467d-8d0b-e4aaea4e70c4/rowatitirumotuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73662316-f224-4609-a90e-534c05adcbe4/dugudulufadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a3d0082-1e13-4037-b984-102cb8358d88/wufulupesemil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f15b0e80-1cf3-4402-bcc1-3e8fd88a60f3/lenojiditom.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_off00008538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8538 5260 bytes
SHA-256: 62bca2df01026d8b7d5f21e8a73afec11bb473eaad582736a85b20c9bfff7555
font_01_sfnt_off000096fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 11128 bytes
SHA-256: 858af1c174fc8ac523374de3e2eda86f1893ace6a6dfa113664db6ce1a8c4dc1

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