Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1219319717a381d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-28 22:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51aed7672a9019ada26c17e218c16890 SHA-1: 67d08ee3fb47484f4a38da6acc43b29c774e8e3c SHA-256: a1219319717a381d5224898830664c3326d15127117230c8ef841df0622e1a90
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Gary Chapman five love languages' and the URL 'https://ttraff.com/wix?keyword=gary+chapman+five+love+languages', suggesting a lure to a malicious site. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, many hosted on 'static.usrfiles.com', which are likely part of a SEO-based distribution strategy.

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=gary+chapman+five+love+languages
    • https://static.usrfiles.com/ugd/b8c837_57f863d9bab34c468be7b9f1bb901095.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fb3e57e73b34600926a1f02be3caadf.pdf
    • https://static.usrfiles.com/ugd/b8c837_3fd14edd0c424e399f80c1a2b0f6c6e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c5a5f1c004b43e59988ca5e22f8c7ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_32d97ab57f0a47c9ab6851cf43d13cac.pdf
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/zesegokerolevifuru.pdf
    • https://cdn.shopify.com/s/files/1/0435/4598/5179/files/dragon_s_blood_droplet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/clinical_diagnostic_interview.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2c2396210724176abdfc9fe94180e7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_080ec4ffa03b4f358c3fdd87102182c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_16d77500cd1d46fa8b209575995d7c32.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_off000060d3.bin
92ef8120d1c816fb175748d5beda54fb5a8d1ae1b9f04d2de7d9b3e4a2c765b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 5624 bytes
font_01_sfnt_off000073ee.bin
ab46da65b4c302720e8de8ef6c816f07292aa4760eb241006a9de3e0e741a871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EE 10692 bytes

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