Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde6148d82dbedce…

MALICIOUS

PDF

48.4 KB Created: 2020-09-02 06:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d8421d9745414cf3d10ea20dfe0de7 SHA-1: 19432798a11996a3026cc9178c1aabceab36b0f6 SHA-256: cde6148d82dbedcea89a9da29dea20f31a802c12e2cc2d0ff575f875bd0af79c
120 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, pointing to 'https://ttraff.me/wix?keyword=chacha+nehru+sports+award+information'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, one of which is 'https://static.usrfiles.com/ugd/b8c837_98fd96e897cd4cdc8a5b05b1f5ad7974.pdf'. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent.

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=chacha+nehru+sports+award+information
    • https://static.usrfiles.com/ugd/b8c837_98fd96e897cd4cdc8a5b05b1f5ad7974.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_e805fd4e259b46b395c90bef85c9e1bb.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_e38fcf52f99443159bdee03376c89a47.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b3ea172b5c2452ca0f08364a1105733.pdf
    • https://static.usrfiles.com/ugd/bdc04d_ba4b618efd6d46e1b9d63e7ad5293aba.pdf
    • https://static.usrfiles.com/ugd/3e9e83_fc3b5b44d3b3456089e4ff93f4feda65.pdf
    • https://static.usrfiles.com/ugd/e3ff21_0222e51617554ca9901c12317cd618e5.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/kotufavemugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/article_format_wordpress.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/88697403165.pdf
    • https://cdn.shopify.com/s/files/1/0434/7854/8630/files/always_with_me_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0447/9614/9921/files/10950245172.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_off00005a9a.bin
70eed05ff9e0980d4b796fc518ea718d6e8e41df33a315c1b7cf6b097ed102ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9A 5360 bytes
font_01_sfnt_off00006cb7.bin
646ef58d01319470749c46da10169a7637210936c0df161b83a5abc4c6fb1c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB7 15604 bytes
font_02_sfnt_off00009ced.bin
6c7f8c0a1be52ef91819fc14f63e31341db6e615ee8086b0763781ba2faa187f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 16476 bytes

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