Malicious PDF — malware analysis report

Static analysis result for SHA-256 3620aa4d8c93d826…

MALICIOUS

PDF

93.8 KB Created: 2020-08-30 06:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a49b4a459fdebe2b0cd3a11e1086314 SHA-1: 1dfd6454847592fc3d4d5b8cfb0f98b0e19c0c7a SHA-256: 3620aa4d8c93d82616dfefa96e230ddd036937aac6c691f68d2eb6cb335ae5b5
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, pointing to 'https://ttraff.com/wix?keyword=spoken+english+guru+pdf+file'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting a broader SEO-based distribution strategy.

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.com/wix?keyword=spoken+english+guru+pdf+file
    • https://static.usrfiles.com/ugd/3f80ec_6e26871990a74b939a0cb65591d65fd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_76426c93836a446db7be881da02757fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c612aa6c3eb24ee98c48caaadba5c8bb.pdf
    • https://static.usrfiles.com/ugd/0049ca_7808a76d5aac461f9740e01a591e8d8b.pdf
    • https://static.usrfiles.com/ugd/510a18_870b8e510a6a429291920e9dc444bdd7.pdf
    • https://static.usrfiles.com/ugd/10e3af_c0f8582818064531b19f752783844a67.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20c8a843dca4c0fb47fb30996a38280.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0157/files/52447555837.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/belajar_bahasa_mandarin_sehari_hari.pdf
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/93998413581.pdf
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/brandon_roy_injury_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/85226067871.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/82976994120.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/4404339946.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_off000110b5.bin
f64348aec387676f4e6be919c615061f94e68919e81ddab1c12cd23bb732e9e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110B5 1812 bytes
font_01_sfnt_off00011962.bin
d4bff3307c3f6a42faf800d4b2c9083f04d1634c587ec8bda7056b7e2ac570a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11962 5260 bytes
font_02_sfnt_off00012b41.bin
e1c6367faf21db7e0bd1d9829e6a089b7096a21b92527d84bbaf0cd5ed74df4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B41 19576 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.