Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebcf6f00b09c362…

MALICIOUS

PDF

68.4 KB Created: 2020-08-29 23:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52929fe9ac4a7a82d936c9731906fa68 SHA-1: fc3da0ee8aa5b356200f54c71e64e95f22c126f8 SHA-256: 1ebcf6f00b09c36280c73f40be2c2ecb5625f5a8d2d1e11cbc56e3b4a7d00b9f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wix?keyword=mortal+kombat+lin+kuei, which is likely used to funnel victims to a phishing or malware site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a large number of external PDF links suggests a link farm strategy to obscure the ultimate destination.

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.cc/wix?keyword=mortal+kombat+lin+kuei
    • https://static.usrfiles.com/ugd/b8c837_155ba0f02f494e728781041923348362.pdf
    • https://static.usrfiles.com/ugd/b8c837_5feaceab535f40989b1c48f2273993c2.pdf
    • https://static.usrfiles.com/ugd/b85eb0_7ea91dc7858646b491cefa8530bf1c6c.pdf
    • https://static.usrfiles.com/ugd/314c35_b496dfbc110b4bd5a8762d495fb47b9e.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/mepemazajasamobol.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/muwigoze.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/fazasodivozufef.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d50b7e52fc346ba9299f91c652bb6f6.pdf
    • https://static.usrfiles.com/ugd/9f6a24_e7704854f6074626b244e250069e8e13.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/first_law_of_thermodynamics_examples.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/jim_morrison_autograph.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_off0000cf0c.bin
d05601b8b2c51127e324e096d68f27b9dc85cb9e756a1d50e7ee0bde786d59c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0C 4864 bytes
font_01_sfnt_off0000df86.bin
6b8e152f72de39c4233ec837d8afffebdd3dbb6f17fb8fa7a36eb06c01e78552		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF86 11008 bytes

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