Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1185075db1d856…

MALICIOUS

PDF

43.5 KB Created: 2020-08-31 09:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927f57b6f47fd147e5385918dbf66022 SHA-1: 65fcbb5ac7cd57a58a9f51465c75483ac976a26e SHA-256: fc1185075db1d8563612807d7b88a2c39190dcff6abe5f0bd4edc5068b490e09
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 'ttraff.com'. The document body also contains this URL, suggesting an attempt to lure the user to a malicious site. While the document itself is generated by wkhtmltopdf and contains a large number of links, the primary malicious indicator is the redirector URL.

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=dinamicas+de+autoconocimiento+para+adolescentes
    • https://static.usrfiles.com/ugd/b8c837_c69bc9f6b1d746459ab5fe9d771c4fa2.pdf
    • https://static.usrfiles.com/ugd/0d2908_aba699592cd04cd79fa7731606146d58.pdf
    • https://static.usrfiles.com/ugd/906e9f_49036548a70a4ad6a4033897d2993540.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/99422606847.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/rosazivujupone.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdf
    • https://cdn.shopify.com/s/files/1/0437/1005/4554/files/74968791769.pdf
    • https://cdn.shopify.com/s/files/1/0437/5475/0106/files/english_alphabet_cursive_writing.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/guxejobuvadobakekilo.pdf
    • https://static.usrfiles.com/ugd/b8c837_2556911f02764007aacff729e7e70393.pdf
    • https://static.usrfiles.com/ugd/b8c837_81a30c15573c4d93b5b754f527edbcfe.pdf
    • https://static.usrfiles.com/ugd/b8c837_5def78df6d9a4c24803373e69d6f63c3.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_off00005be0.bin
10a3e87b717d865f8261fa33ac4df9c1255e8bedbf7b8ef185b281921a420fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE0 5100 bytes
font_01_sfnt_off00006d0e.bin
782319e9030ad490f71f6a4bc1199fd106344afd586fc24e38414197e21142a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0E 11212 bytes
font_02_sfnt_off00009175.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9175 4324 bytes

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