Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7828cb5488dfb59…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 23:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a9adbbdea958d580012ca7292176d24 SHA-1: 7e03d7c6888dcb3944d211fb1bb93ce1f99da615 SHA-256: f7828cb5488dfb5938569daf557623c039109683ae35b37195af873de391a807
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains the title 'The secret of pembrooke park' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other links, many hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to obscure the malicious destination.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.cc/wix?keyword=the+secret+of+pembrooke+park
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/95343482038.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/pekedofix.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/22038160732.pdf
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/banesenogenove.pdf
    • https://static.usrfiles.com/ugd/b8c837_b818b6c3533a4e4dbe5128b69367856b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ed5dcf84bea4e1887ed27bc043eac2f.pdf
    • https://static.usrfiles.com/ugd/ee6770_ea825256b2d9472c9b8dfcaf46089ff1.pdf
    • https://static.usrfiles.com/ugd/5360f8_6bb1ae00ac144fe6b03bd15aa929e6cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c7fed1d42494b16a19a0619eed4f6a4.pdf
    • https://cdn.shopify.com/s/files/1/0463/4725/5970/files/beagle_movie_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/8837/0077/files/ruby_laser_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/nomijuxesiriz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/ma_cuisine_algrienne.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.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_off00006404.bin
21ea48d8c6a153bb494779df0217581e91fbf44562d66271a01a6a0210f6f208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 5376 bytes
font_01_sfnt_off0000762f.bin
b721385b46e3340cf44a9faf8e7179d6ff048684d1a9b60d8a38599ad1325407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 10224 bytes

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