Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f23b0bcdb68eab…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 10:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e9d188c361710af3878cd87cac51dee SHA-1: f9167b6088c482543d1ed754ad19b230d9c88007 SHA-256: 25f23b0bcdb68eab3bf9594ab568be7cdacd0d683664de3dfdfe4a02eac386a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=slope+stability+analysis+journal+pdf. The document body, though heavily obfuscated, also contains this URL and other links pointing to Shopify domains, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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.ru/pify?keyword=slope+stability+analysis+journal+pdf
    • http://files.fabledcollective.com/uploads/1/3/1/3/131384335/sodoves.pdf
    • http://xidotidi.ncadtraining.com/uploads/1/3/0/9/130969060/65a8b45bc9db92.pdf
    • http://files.stohrdesign.com/uploads/1/3/2/8/132814972/4595521.pdf
    • http://files.restorerepairmissionaryoutreach.org/uploads/1/3/0/7/130739892/pozazexexugarizeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/sopasasubabifiwafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mavadusuwavofemikedoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/81710511975.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0629/files/alveolos_anatomia.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/the_tempest_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/las_7_bellas_artes_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/2313445935.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/266376764.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/66942911724.pdf
    • https://cdn.shopify.com/s/files/1/0438/0078/9154/files/rf_to_eu_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/gym_workout_chart_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/74158814727.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_off00006a5b.bin
be8122c4dcad157c06ae6a2e0a6284044b37771bf30b779fd55ec7159fb70b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 5456 bytes
font_01_sfnt_off00007cf9.bin
f4ba6cf467dc5e421e4f3008e3c84457fdbce126f7b1ba44e988d9b7bd884c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF9 10000 bytes

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