Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4badb7346811c57…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 00:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a50fdbeb05f3bd227860839a8656e97 SHA-1: 586af7a3327966bc8290b95127802fb822b455c7 SHA-256: b4badb7346811c5794641391edb21dd07ce496c421f91192a407190cea63ee6a
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users into downloading files, with one primary link redirecting to known malicious infrastructure. The document body text and embedded links suggest a social engineering attempt to trick users into downloading content under the guise of educational materials. The primary malicious URL is https://ttraff.com/wb?keyword=investigatory%20projects%20in%20physics%20for%20class%2011%20pdf%20download.

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/wb?keyword=investigatory%20projects%20in%20physics%20for%20class%2011%20pdf%20download
    • http://files.trimtags.com/uploads/1/3/0/7/130739856/3b51776.pdf
    • http://rizuvedu.moodyabdul.com/uploads/1/3/1/4/131407178/dixavifox_zazadovilokovag_zikugabeposunaw_kubukoxigenoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/6981/files/guzedod.pdf
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/latekujegesebevavutuwive.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/sixibebegala.pdf
    • https://cdn.shopify.com/s/files/1/0436/9265/4745/files/jemuziwofamavakegok.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/cengage_chemistry_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/51969152224.pdf
    • https://cdn.shopify.com/s/files/1/0433/6304/1430/files/89392668997.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/poparotize.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/cyberlink_media_suite_10.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_off00005d6d.bin
273dee4f258c067cc6ce24d8ae02450335c251bdcd64c9ea2c2557653cf91ac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5736 bytes
font_01_sfnt_off00007110.bin
55dcbd1adfad3a3578c936e9ac5af0b0dff1a96adc889ae4d54921de766febbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7110 10332 bytes

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