Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea511a70830dd3e…

MALICIOUS

PDF

57.6 KB Created: 2020-09-01 11:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f51906e5b2e4159546e2a76481148f0 SHA-1: 0cb86c025487d90b5c625fc2a02cad1904f94c5a SHA-256: dea511a70830dd3efb13284491fed65189f7c21f39da3418375b84ab1a32adfa
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the string 'you dodie sheet music' and the malicious URL, suggesting a lure for users interested in music. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the primary link, while 'PDF_SEO_LINK_FARM' indicates a large number of other links, likely to obscure the malicious one or for SEO manipulation.

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.cc/pify?keyword=you+dodie+sheet+music
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/19157424469.pdf
    • https://cdn.shopify.com/s/files/1/0432/7004/5864/files/simaneba.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/bwapp_cheat_sheet.pdf
    • https://static.usrfiles.com/ugd/625844_0b9136999015416591e60f073ce78213.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/chemistry_matters_2nd_edition_textbook_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1116/1768/files/fivefewodinuxuvu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/70585205288.pdf
    • https://cdn.shopify.com/s/files/1/0435/6676/0095/files/6246617312.pdf
    • https://youtu.be/Y
    • 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_off000080c2.bin
d846018b0ef7c44a6c6e596d3fcd555696f514ba131efb854782e9f45ab8e10a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 4800 bytes
font_01_sfnt_off000090fa.bin
af0e1c6a309fd90dda8b77efa4e4856a2fe0cac733d5aebff0875243477f4bde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90FA 16272 bytes
font_02_sfnt_off0000c4d3.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D3 16204 bytes

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