Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db0a6efe6867042…

MALICIOUS

PDF

35.7 KB Created: 2020-09-08 17:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 410c7681fb7e9895ed4ead0163b74e70 SHA-1: 04eb8809bd0f7c6c1c01ce2536a13b314e4f506b SHA-256: 8db0a6efe6867042068bc68701456076bd2e0f279787b73463f75be1c51813db
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=arturo+sandoval+ariana+grande'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to benign content but likely serving to obscure the malicious redirector. The document body, though heavily obfuscated, contains the same keyword as the malicious URL, suggesting a lure.

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/wix?keyword=arturo+sandoval+ariana+grande
    • https://static.usrfiles.com/ugd/4bb894_e9265190bc0c47c6965eac76f327eaa8.pdf
    • https://static.usrfiles.com/ugd/599026_039d1e29f61943c5ac076a56dc56d965.pdf
    • https://static.usrfiles.com/ugd/0286dd_5d04960efffa4939ba3f276f3c29b8d0.pdf
    • https://static.usrfiles.com/ugd/a91264_0636c49ec8d04446b0fc49b2fb7c0afe.pdf
    • https://static.usrfiles.com/ugd/432b07_a861369fe86942a79738a8657d4a2c82.pdf
    • https://cdn.shopify.com/s/files/1/0437/0605/6869/files/inference_context_clues_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/oh_baby_film_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/9848/6424/files/26243979093.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/widudipe.pdf
    • https://cdn.shopify.com/s/files/1/0438/8965/5960/files/765113039.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/arrays_in_cpp.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_off00004282.bin
e39ddfe6b0b297c5e9977e26b0454174f3ced546f7bbb7eed9d7f66705610ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4282 4924 bytes
font_01_sfnt_off0000534f.bin
592268b7a68410f7526d235ae294e45a421fe9f0ddcf62a988063973490b3ce7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x534F 9536 bytes
font_02_sfnt_off0000741b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741B 4324 bytes

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