Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0c2488fff7e6bd…

MALICIOUS

PDF

43.0 KB Created: 2020-08-15 21:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8698eb3989fdb8e9331d21b203e4b9b3 SHA-1: 63146cd334894463373f6f8f93d75fcddddf45d0 SHA-256: df0c2488fff7e6bda563fa007b077fe03d439f68d5278cfd8d2ff184617b55f7
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One prominent link, 'https://ttraff.ru/wb?keyword=information%20technology%20project%20management%208th%20edition%20pdf%20download', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating the primary intent is to redirect the user to potentially malicious content.

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/wb?keyword=information%20technology%20project%20management%208th%20edition%20pdf%20download
    • http://files.gaetanaworks.com/uploads/1/3/1/4/131453429/4483504.pdf
    • http://files.classicknot.com/uploads/1/3/1/8/131857199/7f736fb7043ccfb.pdf
    • http://files.deathly-designs.com/uploads/1/3/0/7/130776452/nukajog.pdf
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/pet_listening_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/ernest_p_chan_algorithmic_trading.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/buforexunagasojur.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/rozobuxenozavoguvesomano.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/mathematics_all_symbols_name.pdf
    • https://cdn.shopify.com/s/files/1/0440/6401/4486/files/numpy_sort_array_by_column.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/54642930413.pdf
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/fubivagonuposejejoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/cambridge_checkpoint_math_coursebook_7.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3287/files/watch_brave_online_free.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_off000067a0.bin
297d522dfb72560db3c93cbe8f5fc0124e1b36d7f9037a04b90126e8c6ab387b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A0 5792 bytes
font_01_sfnt_off00007b41.bin
60a46776b8cc40fc10d2d228c0f6c7f49fee52f46aa50d5fd045fcaa09723711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B41 10508 bytes

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