Malicious PDF — malware analysis report

Static analysis result for SHA-256 547ffea44182187f…

MALICIOUS

PDF

69.4 KB Created: 2020-08-29 21:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 646a58460b5f8bc003d9c62c1359ada2 SHA-1: d1a498b6403b09eb7012f22c56618919b8b89d4e SHA-256: 547ffea44182187f872de39854500807c68acc9c85deb366720a5635670739ad
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=charles+taylor+atomism'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains references to the malicious URL, suggesting an attempt to drive traffic to it. The primary attack pattern involves luring users through these links.

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.me/wix?keyword=charles+taylor+atomism
    • https://static.usrfiles.com/ugd/b8c837_9bcc5f2c98884778aaea515996663cd5.pdf
    • https://static.usrfiles.com/ugd/cc10e7_495ae52f6e144d37afb434fc0f1f6209.pdf
    • https://static.usrfiles.com/ugd/02beb7_45afde356d3b4cedab204cc987c44037.pdf
    • https://static.usrfiles.com/ugd/b6edda_60d6a82cec1b402c9f228dbdd44a90a7.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/43731149625.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ea55b7faf6f4a14b06759d01b5ff17b.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ea207f4971d409092a5405c628b3714.pdf
    • https://static.usrfiles.com/ugd/b8c837_073592ebeac649b99be6b569b541cea0.pdf
    • https://static.usrfiles.com/ugd/bae363_44b34f26b64b43aeb474877b41c999ee.pdf
    • https://static.usrfiles.com/ugd/34ec99_52eeabb8ea454463a792d2ecc81abfc7.pdf
    • https://static.usrfiles.com/ugd/834936_4834763ca4fd4d5a898c2923656d6b66.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_off0000d3bd.bin
c7ee76426cf971cf873d1d09b9a9067da960d4c6e24cd3d00847a731fa056138		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BD 4932 bytes
font_01_sfnt_off0000e463.bin
9d1e03591ff1defed60b96e7cbd9d437ecbe7df6a9a3c661a10410ccc9bca78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 10760 bytes

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