Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf83998367a07be…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 21:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6099457da3acf034a66d7f6f2ff0a03f SHA-1: 3ca2883e4426b3809c4b8211ce0c18443dfe70ad SHA-256: daf83998367a07be673f05b96e9b33e66c24d2585522a451b573a38db9e9849e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Tactics for toeic listening and reading pdf'. The embedded link directs to this malicious URL, which likely serves as a gateway to further malicious content or exploits. The PDF also contains a mass external link farm, indicating a potential SEO poisoning or link distribution tactic.

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=tactics+for+toeic+listening+and+reading+pdf
    • https://static.usrfiles.com/ugd/1cfe37_509a375a08094bca9b136a3edef7bd55.pdf
    • https://static.usrfiles.com/ugd/b8c837_32e53d90a49a4979b4211f2d94e74721.pdf
    • https://static.usrfiles.com/ugd/99afdc_fcf0926e827c44329110aa71f199ad43.pdf
    • https://static.usrfiles.com/ugd/65b209_e0f741970ecc4d9c817ee4045b8d4bd2.pdf
    • https://static.usrfiles.com/ugd/f0f215_a6ede16198ad42c388476df9f7bb9a39.pdf
    • https://cdn.shopify.com/s/files/1/0450/9381/4435/files/jevazawukaletenaduruzos.pdf
    • https://static.usrfiles.com/ugd/804ff6_58cf128a792244b0a88567a5b48c9245.pdf
    • https://static.usrfiles.com/ugd/b444d4_2dfb8642828a4bcfaac69c6aeeb37130.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8703/files/38532612786.pdf
    • https://cdn.shopify.com/s/files/1/0433/4524/8407/files/ryanair_boarding_pass_mobile.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d1.bin
42ad34a3161d5b3a49e3daa7d0da5311479acceed73e441d6750d8946c8a6641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D1 3992 bytes
font_01_sfnt_off00005fd4.bin
9fd3e57dc55b3286609b14a0d2edbad9f913f1a01214e2962018b1cf960cd238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD4 5060 bytes
font_02_sfnt_off00007106.bin
70828894f46360922abdd0a76750c154b5164f5d4b90a04092dcf7a8affa95df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7106 10460 bytes
font_03_sfnt_off0000940e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940E 4324 bytes

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