Malicious PDF — malware analysis report

Static analysis result for SHA-256 511fa1cc4ebd7ec3…

MALICIOUS

PDF

46.0 KB Created: 2020-08-30 17:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dbf6bd18aff3b70a3264e38530e8942 SHA-1: b836daf2dae8acd634198428daee87d1ebdd10ba SHA-256: 511fa1cc4ebd7ec39503cc4403e8462626ae2e4a5465815e24e2857586cb85ba
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game mod, likely intended to trick users into clicking through to malicious infrastructure. The presence of a link farm and a critical redirector firing strongly suggests a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=gta+san+andreas+asker+modu+%25C5%259Fifresi
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/autodesk_autocad_2015_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/japanelijasubasimivemepag.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/software_architecture_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a65298334da4510b6ed68a339334389.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ff32f78a12449649dd687e530b692e7.pdf
    • https://static.usrfiles.com/ugd/d55797_cfe4c25bb6d648cbb6b1a8ab03d606e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_828c7b6b1e374f26b03c6deba4942538.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e20cf22dcff4ccd9db6f99ace2f907b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4b04af9a61a4a1baa7d41cb89037e9f.pdf
    • https://static.usrfiles.com/ugd/824332_160b51dd60c5406a8f8cc522ed6e6d2d.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_off000067b5.bin
6ca177866abfbb1556065a93dc4b407a1345f874383267f3d03473a220a981a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 5364 bytes
font_01_sfnt_off00007969.bin
02de7641b350203b5562ef2c9f53414a5240eac0fef0c5846886ed62093312aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7969 16832 bytes

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