Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf8e14831b078fc…

MALICIOUS

PDF

33.7 KB Created: 2020-08-29 20:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5de674d81cd55b58839b4fded69315a SHA-1: e37b8911b8b9905356146791100f82c00903bef6 SHA-256: bdf8e14831b078fc6fae9772f7f9164b0e2d3e2e88c73e7aa8357b0d6b6a9bec
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.ru/wix?keyword=j%25C3%25A9sus+nous+croyons+partition'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector strongly suggests a phishing or malware delivery attempt.

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.
  • 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.
  • 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.ru/wix?keyword=j%25C3%25A9sus+nous+croyons+partition
    • https://cdn.shopify.com/s/files/1/0447/2363/4330/files/66991191059.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/wafasilumokotarokax.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/gibutidiwobajowuxovulan.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/sosamexepebesikuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/79136229114.pdf
    • https://cdn.shopify.com/s/files/1/0432/9046/0324/files/pelefi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6142/files/jenivovafopeji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/5317787666.pdf
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/93337496199.pdf
    • https://static.usrfiles.com/ugd/b8c837_58b5d391d825494a9a8833891b854cf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad9a4e6550f345d6abef8dcb9285c6b4.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043cd.bin
053eac3c1600e1c22c2858a65071d8fee4e17e26f0a08ef0f32a5124730da9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43CD 5128 bytes
font_01_sfnt_off00005513.bin
c2a4a2624ce8fdc29cc53d61c0818d7857fb9fa40142e469d034a03777450c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5513 11364 bytes

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