Malicious PDF — malware analysis report

Static analysis result for SHA-256 335b184219cf047a…

MALICIOUS

PDF

49.7 KB Created: 2020-08-28 07:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55872fc00ac76246f9de9402725e2803 SHA-1: 953b14aaa3ae3ded0069422e357630ba31996dc3 SHA-256: 335b184219cf047abe345ecd31b4b0295fdc333eb31b1e7db320edc83908a823
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file exhibits malicious behavior through a critical heuristic firing indicating a redirector link to 'ttraff.me'. Additionally, it contains a mass external PDF link farm, with the first URL pointing to a Shopify domain. The embedded URL in the document body further supports the malicious intent. The primary attack pattern involves luring users through these links, likely leading to a phishing page or malware download.

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.me/pify?keyword=ejercicios+probabilidad+selectividad+resueltos+madrid
    • http://files.boundtogethercounseling.com/uploads/1/3/0/8/130814439/7698201.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/the_cask_of_amontillado_test.pdf
    • https://cdn.shopify.com/s/files/1/0438/1949/9682/files/51566249580.pdf
    • https://cdn.shopify.com/s/files/1/0435/3661/3544/files/luresegena.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/rizutib.pdf
    • https://cdn.shopify.com/s/files/1/0430/8061/4041/files/keresesifedofekaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/call_of_duty_black_ops_steam.pdf
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/parlisis_del_nervio_facial.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/81404303435.pdf
    • https://cdn.shopify.com/s/files/1/0447/5040/5783/files/gb_whatsapp_ios_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/fuxuwoxib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5560/3094/files/84984691432.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_off00007e9e.bin
2a16d5fa2d976fd00faaf5c6ad1339185be8baca6b992fd841e7788d138654df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9E 5452 bytes
font_01_sfnt_off0000910c.bin
a7b935c9efaca9a8fd60eddb521b90e1cd0478dfa2a307e81d698c3afaa80a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x910C 11880 bytes

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