Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66502ac710eb16b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 10:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9459b7870308173dc8f1225d77e173fa SHA-1: 48ad3f3af6d4c76e23054a7f09b703cbf743efcd SHA-256: d66502ac710eb16b90e61b3b703873e33824c5270f6b401036a378628c2b57ca
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL that leads to this redirector. The heuristic firings indicate that this PDF is designed as a link farm, with the primary malicious link leading to ttraff.com. This suggests a social engineering attack aiming to redirect users to malicious 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=active+and+passive+voice+of+verbs+qu
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/88345677982.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9007/files/12678490905.pdf
    • https://cdn.shopify.com/s/files/1/0430/8877/3269/files/wuwaremido.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/17250570438.pdf
    • https://static.usrfiles.com/ugd/db1da1_a7b667c6a7964df09aa43e0ea8b7bd75.pdf
    • https://static.usrfiles.com/ugd/dba42a_d3d1874254c74b81be0d0609e0e4349c.pdf
    • https://static.usrfiles.com/ugd/b8c837_78a87964cf96490f80862d766b1b745e.pdf
    • https://static.usrfiles.com/ugd/b88e3d_be2013dfc50e48789f0c30ec45abb1de.pdf
    • https://static.usrfiles.com/ugd/f46427_8c32bb1b66fc46558e745fe2eb6e7720.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0e62dd6c66443f594f71cf643fa641d.pdf
    • https://static.usrfiles.com/ugd/b8c837_104ba1b2b00b40cab1152d3abcee4455.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6351/files/sefod.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/arrival_of_the_queen_of_sheba_string_quartet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/70709255362.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/rimigavijewelegeborukex.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/turtle_diagram_template_word.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_off00006471.bin
5ff03edd6ecc8c7b26ad6ab74a3994b5ec242a64994fec8a4ebf1a26ef85f48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 5432 bytes
font_01_sfnt_off000076f3.bin
9625d298b1003661347a95e3b6223087e81e718e2c3a3a2f42cee63d4b275ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F3 10220 bytes

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