Malicious PDF — malware analysis report

Static analysis result for SHA-256 290818d19a365132…

MALICIOUS

PDF

57.9 KB Created: 2020-09-02 03:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5378ea28d4f0b573697666075dbcb482 SHA-1: aed707ad611e1b381cfc2a36572ee6d65ca40497 SHA-256: 290818d19a365132b1a445e5d5e55d12eca2efd0f61a23869c75312fa884796a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/wix?keyword=story+english+pdf', is flagged as a known malicious redirector. The document body is heavily obfuscated and contains a mix of readable text and what appears to be binary data, but the presence of numerous links strongly suggests a malicious intent to redirect users to external, potentially harmful, content.

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=story+english+pdf
    • https://static.usrfiles.com/ugd/b8c837_f792ba54f7334e22b0ec3c5a7773eb15.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e5da1b3069347dd8e0e2853f2914e38.pdf
    • https://static.usrfiles.com/ugd/724bd4_409227a0c8cf43b48613dc514bc7e62e.pdf
    • https://static.usrfiles.com/ugd/a4e402_25eb5725570946ab91edbefb4b4a2770.pdf
    • https://static.usrfiles.com/ugd/b8c837_5af6dc5364c24ce1a528da0d279820a9.pdf
    • https://static.usrfiles.com/ugd/fdee49_35ec10e80963483cba485310866e24e3.pdf
    • https://static.usrfiles.com/ugd/c1c462_af91344be68545748c72c41d580fed87.pdf
    • https://static.usrfiles.com/ugd/7921d2_ae3ee9bf8fbe42a3a9239fbc3735e99c.pdf
    • https://static.usrfiles.com/ugd/36f25b_ba9caebd94ca4666b5918d5d5600f712.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad930f9d705b458d8c3e80af9d8e9ac8.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3576/files/operatoria_dental_barrancos_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/benofatipazad.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/32322303322.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4f7ac90e6dd4d6b9195487a5d661922.pdf
    • https://static.usrfiles.com/ugd/a107db_e2bb8c5eebf544a48fa27ce3d85aa54c.pdf
    • https://static.usrfiles.com/ugd/0049ca_49b6e3917d044e2298704d72d58338cc.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_off00009910.bin
97560ea701d480278f5160e3bc33b12ae9d8068c721827351261d2cd488cf2c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9910 3184 bytes
font_01_sfnt_off0000a465.bin
9891b99e0e9a313e53ac971dee9ded55daeb8cad5268d2da969b303c7d569e31
pdf-font-stream PDF embedded font (sfnt) at offset 0xA465 5296 bytes
font_02_sfnt_off0000b670.bin
09af2a3ac90df8c25bf9922ccf7f5764fb0bca6db78d8eb1354fa21c1f50a75e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB670 11060 bytes