PDF malware analysis — malicious · 284c7b0af917c6f0

MALICIOUS

PDF

48.3 KB Created: 2020-08-31 08:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 495e3b5208e92c09143bf8a6d1c6c123 SHA-1: 8b0ac6f70ed6fd3a9d50e5d8495ffca2a6b3b62c SHA-256: 284c7b0af917c6f02a2d74a12135e156dea399508831058d1d0b7bd0972638be

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Watson Glaser critical thinking test' and the malicious URL. This suggests a phishing or social engineering attack where the user is tricked into clicking the malicious link under the guise of taking a test.

Heuristics 4

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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.ru/wix?keyword=watson+glaser+critical+thinking+test
- https://static.usrfiles.com/ugd/934fc3_60c1a333ee8e431991b2de259b8cf3f7.pdf
- https://static.usrfiles.com/ugd/affb4a_cdb79c28408d4efdb0b41162bd967863.pdf
- https://static.usrfiles.com/ugd/b8c837_25543622b9ae4d07bb1ea74336628cf4.pdf
- https://static.usrfiles.com/ugd/db93e9_a7083a7585c240a6a62ab557d2888b93.pdf
- https://static.usrfiles.com/ugd/b8c837_7649132ef5904122b1299c1e52f472a3.pdf
- https://cdn.shopify.com/s/files/1/0433/7932/7130/files/latest_catholic_songs_mix.pdf
- https://cdn.shopify.com/s/files/1/0433/1008/8360/files/nowusozolakuwe.pdf
- https://cdn.shopify.com/s/files/1/0439/3920/1192/files/blossom_of_the_savannah_video.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdf
- https://cdn.shopify.com/s/files/1/0432/6490/1270/files/nosivosedawo.pdf
- https://static.usrfiles.com/ugd/9b5f63_da5f00b5d68d4e40bdc29baf7f9edc38.pdf
- https://static.usrfiles.com/ugd/5926b4_b3c61a9b246b4fdcbd8b4198bca6cea0.pdf
- https://static.usrfiles.com/ugd/b8c837_e8f9b1f3727c49e0a214c508011206bd.pdf
- https://static.usrfiles.com/ugd/b8bbd7_134cabd9d7f249ca8cf0fda0e0e4cd78.pdf
- https://static.usrfiles.com/ugd/1b8612_b6e8a951a28e4f779a3c4efe9402ca8a.pdf
- https://static.usrfiles.com/ugd/0cd3a8_e7859e94ecad4de6918a4d9210d6dafe.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00008017.bin` `91fdf13ed1c3015c6eb7546df6080b4196d01c582638944d825832b195b05357`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8017	5140 bytes
`font_01_sfnt_off00009192.bin` `14da0c9f30af3009df49b5bff3a902850c8f4615cc1cd28699fa336163ac1c1d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9192	10160 bytes

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