Malicious PDF — malware analysis report

Static analysis result for SHA-256 33dd545a7a1dc2ee…

MALICIOUS

PDF

63.3 KB Created: 2020-09-01 19:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0cafbc6dd6c8fce774d79efec6b12df SHA-1: f89034b871fe79a52e28d4ff0d2be9d0b786054f SHA-256: 33dd545a7a1dc2eee9e1452d38063693c8f4e76ab6fc4f04a01d0aaeb7d8124f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/wix?keyword=cheat+capsa+susun+boyaa+android'. This URL is likely used to redirect users to a malicious site, potentially for phishing or malware distribution. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous other links suggests a link farm or SEO poisoning tactic to increase visibility.

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.club/wix?keyword=cheat+capsa+susun+boyaa+android
    • https://static.usrfiles.com/ugd/008e52_ee91fdb809fd4c5a8fe9cef7fd6040cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_396b74fddcfa4f3ea21613a5cf13104d.pdf
    • https://static.usrfiles.com/ugd/accd1f_949a6aea4b7e43b79693735864b37e18.pdf
    • https://static.usrfiles.com/ugd/de60da_94e2b35d627a4d7c950d7d8aac02b768.pdf
    • https://static.usrfiles.com/ugd/0c268c_1eed3e24e2c346629bc712408f443dc4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/52137024363.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/xulojalitovuxiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdf
    • https://static.usrfiles.com/ugd/b8c837_d981cf72802143b6b7f0c835c72fc7fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_0211ac8a26b74ddd899207dd28056655.pdf
    • https://static.usrfiles.com/ugd/5ed537_6f9d7a3d25fb4594b7e61a16e4731953.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008db2.bin
7984eebe49b037aaaa295a6a584897da8342db6c299c25284109324bd8f814bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB2 3300 bytes
font_01_sfnt_off0000997f.bin
cfd3bcd1278e1cfb63906781fb4a451325090f03546b2dce29a67328a2f0db9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x997F 5276 bytes
font_02_sfnt_off0000ab5e.bin
2866c09ea54de60bf578d4b9a34740bb1d4f82b0d782f5a5b1239b2422d2b499		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5E 14836 bytes
font_03_sfnt_off0000da95.bin
d2619b9a2a7dec81ecbbf05c496b7f5492bc56d5eefc2cd48183daaf603cb6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA95 16160 bytes

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