Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ea1920ea5533d2…

MALICIOUS

PDF

43.0 KB Created: 2020-08-31 20:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abcb154ac9e3e3fbbeb642d88dc9008a SHA-1: a0980ad1c1b447917c91e09572409d23ca48ae05 SHA-256: b4ea1920ea5533d29f4a068f1154624fc67bb99b5ec75029ace32b122695eb52
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to the same domain, which is indicative of a link farm or redirector strategy. One of the primary links, 'https://ttraff.com/wix?keyword=water+cycle+ppt+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to trick users into visiting this malicious site, likely for further exploitation or phishing.

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.com/wix?keyword=water+cycle+ppt+template
    • https://static.usrfiles.com/ugd/83d902_7d38e83f4ece431a963142533ade672a.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e2332e9d968435c90a88c7900c7f6ca.pdf
    • https://static.usrfiles.com/ugd/63d3ad_0c2803663f73496c9edc89bb903be77e.pdf
    • https://static.usrfiles.com/ugd/b8c837_10e29f09fdae409693f8eacb75908e09.pdf
    • https://static.usrfiles.com/ugd/136d07_7b77266cbb014928a62bdec499a1df12.pdf
    • https://static.usrfiles.com/ugd/221f3a_4b0c07495f8040d08ceb489a8e48e4eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_01abae187c814641bd7c5b67a3d3278f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4364837c90e34bed80cf35080e482e5a.pdf
    • https://static.usrfiles.com/ugd/3b0c81_60291ef39cc74b32bd77821370acd12b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8f7d119cd7a4af69d3d0cf4b5e29ad9.pdf
    • https://static.usrfiles.com/ugd/0aab01_246c9a563aa54b679f187f8c19b99edd.pdf
    • https://static.usrfiles.com/ugd/26481d_52cde0ef83c54d4bb93c9015f7f0265f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e88.bin
8365d0e903dc1331da9c36707d715d073fa47df81d166e0fe44f575b709aeedc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 4540 bytes
font_01_sfnt_off00006e07.bin
72abd9ce7824685d767d449b4705a23d79d908bcdc6af576ccb06f5ee22bc07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E07 10516 bytes
font_02_sfnt_off00009173.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9173 4324 bytes

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