Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa7460150fca18d…

MALICIOUS

PDF

40.1 KB Created: 2020-09-09 12:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863ce8df8ec802568239b085ea15314c SHA-1: 9f69b3f3f04f49995f1f8571809e0032e57ab00c SHA-256: faa7460150fca18d825d5fc7c3358ceee6ff94b68a1e985ae14463aca075b6f6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=merge+two+excel+sheets+remove+duplicates'. This URL is presented as a lure, likely to trick users into clicking it. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as the primary attack vector. The file also contains a PDF link farm heuristic, indicating a broader attempt to distribute malicious links.

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.club/wix?keyword=merge+two+excel+sheets+remove+duplicates
    • https://static.usrfiles.com/ugd/1ee69b_a58fec7df18941d58a3aac6688f6bfbb.pdf
    • https://static.usrfiles.com/ugd/c4b402_5c92e3bd391d4322b69296bcb3fd11ab.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_f6e9af1126384498b44f38c5574b40ce.pdf
    • https://static.usrfiles.com/ugd/362633_a43761eff854468ab36ac938cf54dc01.pdf
    • https://static.usrfiles.com/ugd/b8c837_68d82d63751d4673a654b89ed94a7141.pdf
    • https://cdn.shopify.com/s/files/1/0457/6899/9078/files/bisex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/72065134665.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/34108442992.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/kagugowoguwolajef.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/tokenumagewerujedafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/87277096560.pdf
    • https://static.usrfiles.com/ugd/d9e9a0_d11d4e33d14b48328e42fc9735b17c70.pdf
    • https://static.usrfiles.com/ugd/12dc78_d04db33f13784e129c5d1d18b041d60a.pdf
    • https://static.usrfiles.com/ugd/e745be_f29e01b4e32f4fea9a54e3ec06b2dc43.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_off00005d0b.bin
1815f86e1e1c1a82b5d99f373408f4ffc800300ca2a40c0c59ce730680a3998f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 5712 bytes
font_01_sfnt_off00007078.bin
77bf168d876cf4c118a648a42b12861eea6658bbdbb2da6c98403b642814733f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7078 10476 bytes

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