Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41623566ff77eb7…

MALICIOUS

PDF

49.7 KB Created: 2020-08-29 17:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9de997fa6c932cc5458ae2623e4d6537 SHA-1: e6ce309f6cefaf38fefb6bb77cca048ad2b87a34 SHA-256: f41623566ff77eb7472b9f007c25a42961b6f9656a6a3de399224809e9c04f06
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body also contains this URL, along with numerous other Shopify links, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is designed to redirect users to potentially harmful content.

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.com/wix?keyword=learning+computer+architecture+with+raspberry+pi+pdf
    • https://cdn.shopify.com/s/files/1/0437/4845/8647/files/deconstruction_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/90091154182.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8078/files/40300982333.pdf
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/sample_cv_template_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/castlevania_symphony_of_the_night_psp_rom.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/kti_askep_bronkopneumonia_pada_anak.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/kenai_river_fishing_guides_alaska.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/responsive_receipt_invoice_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/4322/5751/files/fumugamov.pdf
    • https://cdn.shopify.com/s/files/1/0459/9532/7655/files/5361673753.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/74950134470.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7780/files/gastroenterologos_en_queretaro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075bc.bin
6b715fa3c61662ab88d820b2be1a51496a5b0b2205d53ed769ddf71c30b70824		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 5696 bytes
font_01_sfnt_off000088fe.bin
22b7207d9908aa0e764e961b7ce0bb3056288d4b9114e98302df9c3b9546ff7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88FE 10248 bytes
font_02_sfnt_off0000abd9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD9 4324 bytes

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