Malicious PDF — malware analysis report

Static analysis result for SHA-256 314a260c476fc4e6…

MALICIOUS

PDF

58.5 KB Created: 2020-08-09 10:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5070a6df197716b3d04b3308917c2e7f SHA-1: d5507324f6950ba8f6afa46f7c92ea1f8624be72 SHA-256: 314a260c476fc4e679b6a1db192b6b6ff4404511c950a7f5e545a0b5a6120f1b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=cefr+b1+test+pdf+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C', is flagged as a known malicious redirector. The presence of multiple Shopify-hosted PDF links suggests an attempt to obscure the true malicious destination. No scripts were extracted, and the document body was heavily obfuscated.

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.com/pify?keyword=cefr+b1+test+pdf+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C
    • http://xosifatuk.mrsamartinez.com/uploads/1/3/0/8/130814328/lipuwezonoxuta.pdf
    • http://files.phoenixhypnobirthing.com/uploads/1/3/0/7/130740173/pedubugepaxizo_lumat_pusop.pdf
    • http://muderopuk.darrenellisdance.com/uploads/1/3/1/4/131452883/jufurizomowin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/novitisusuxibanaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/ikea_catalogue_2020_australia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/ancel_vd500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/58668926422.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/15996039340.pdf
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/nisekonukorubi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/black_potatoes.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_off0000969f.bin
f0eb8378a4df539d83b142bcfa9fab0fa0ec451223364662078c2a72df8b59c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969F 5520 bytes
font_01_sfnt_off0000a984.bin
3c7b548911a3da7a6d8ed9c5ef3dc8d657bd5f830e8de08c9c26ca2db2b3d745		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA984 16156 bytes

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