Malicious PDF — malware analysis report

Static analysis result for SHA-256 314665d3ca98ff41…

MALICIOUS

PDF

59.2 KB Created: 2020-08-31 05:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bbdf77817c03b8872a6445c1b4de149 SHA-1: ffe0d4e2f86df9e18888f118ac478c6e964f0fa7 SHA-256: 314665d3ca98ff41064a0e30e11c60121dd799fc0f25f1117ccc8445797c9c77
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a large number of external links, many hosted on Shopify, suggests an attempt to manipulate search engine results or lure users to malicious sites.

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.me/wix?keyword=planeacion+de+espa%25C3%25B1ol+primer+grado+d
    • https://cdn.shopify.com/s/files/1/0457/6883/5228/files/14745999467.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/69545625486.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/92710904042.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/24772277173.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/16398733538.pdf
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/all_basic_sql_queries_commands.pdf
    • https://cdn.shopify.com/s/files/1/0428/8921/6167/files/dupijoboposumibazewake.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/netbeans_for_ubuntu_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5959/files/xizurobuwa.pdf
    • https://cdn.shopify.com/s/files/1/0464/6977/5528/files/latest_hd_marathi_movies_free_avi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/assistant_creed_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/tu_jo_mila.pdf
    • https://static.usrfiles.com/ugd/b8c837_728cd89036d54d069341e7f9b088b0f1.pdf
    • https://static.usrfiles.com/ugd/8ba634_c8a62c6ba97c475da30462fc52228ac1.pdf
    • https://static.usrfiles.com/ugd/4d6844_6549dfda5b614d37b991aa199577095b.pdf
    • https://static.usrfiles.com/ugd/0047a4_63593c732df041e886fe2cec4e8122de.pdf
    • https://static.usrfiles.com/ugd/7041e4_1c39b85580284c00b3607d930893bc5d.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_off0000a57d.bin
cb08c03c7c88b2c63e0034a4d8ad8d152e3912a68a8f69c4596d2525022cf06a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA57D 5608 bytes
font_01_sfnt_off0000b829.bin
3c23a47c868a80d844c3a3ea2259bf12412377e4536fffcd2d09c53388a75570		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB829 11560 bytes

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