Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1822b1738b0e58c…

MALICIOUS

PDF

36.6 KB Created: 2020-09-18 10:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c443a6c6e1d4717d758375cafc8235b SHA-1: 4f947db53ac32061927a58beb481668e6c746ccd SHA-256: c1822b1738b0e58c4409e5e08a4b28a116c5a5d224475d0d3b89129a05976016
142 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to the 'Jones cup invitational 2020' and includes the malicious URL. The presence of a callback phishing lure heuristic further suggests a social engineering attempt to trick the user into interacting with the document or its links.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=jones+cup+invitational+2020
    • https://2af9d77d-336f-4d01-b30b-040182d553e4.filesusr.com/ugd/a13bc2_397fd3bf779148d7a58378577e18c5fc.pdf?index=true
    • https://2a1ac6bc-9ba8-47bf-b85b-e76ecfa1254c.filesusr.com/ugd/0aab01_48f8559506b2466c95f8d2e54edbae8f.pdf?index=true
    • https://8f6c62b3-a16a-4b95-9fb0-764d050ae167.filesusr.com/ugd/defd8a_6089a6a5071b4dacb43f8efbef474bdf.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/77392959943.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/aha_hypothermia_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdf
    • https://8a7fc7ec-d324-4f42-b6d3-e9ae63c324d1.filesusr.com/ugd/fd30ac_e5f9161780474e7ba9a9c359b52dab64.pdf?index=true
    • https://45dd3b96-7a77-4842-9582-89de95ff0f7a.filesusr.com/ugd/7ae8b3_0eda68e2f144484baf80a0e983c8dc8b.pdf?index=true
    • https://794e8e2d-520a-4294-9ab7-a3f28cdc703d.filesusr.com/ugd/bcb9fd_65702eb5164f444ab93e89adb3c0a655.pdf?index=true
    • https://019a4d80-acd4-4fbf-9330-5addf04766e0.filesusr.com/ugd/7a13df_59368e3858e5459c9965734048925d86.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/biwinebumidalogowomexo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/8728374448.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_off00004fea.bin
9acc8e36029e496f9b592278975876322993fded3dbc98ed5b529188d7a314bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FEA 5156 bytes
font_01_sfnt_off00006196.bin
c8558019101ae61c0112759235a8b75d8a629b2ed9b3b55a6bdfe2e76a6b7af1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 10868 bytes