Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca28a66572215828…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 08:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7853f68cd27e210d41a29d55721b0f88 SHA-1: d6b8f1e950718a7c791fdaa305e831da3ed6308a SHA-256: ca28a66572215828c769acb12d63dd24e10c4e23473c1f2566fdae3d0faed1fd
120 Risk Score

Malware Insights

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

The PDF document contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text related to 'Assassins creed black flag xbox 360 controls', suggesting a lure to entice users to click the malicious link. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are benign but serve to obscure the malicious one.

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/wix?keyword=assassins+creed+black+flag+xbox+360+controls
    • https://static.usrfiles.com/ugd/1be480_7f302315cd374a139b9162c85701d144.pdf
    • https://static.usrfiles.com/ugd/575363_e2f5a21697fb4b4cb92d5e453117c93d.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf4b339f1a4347c79ef99a2861765bba.pdf
    • https://static.usrfiles.com/ugd/6240f8_42b203d0d931426d9f009a37ce7e5536.pdf
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/zabavivetujevofaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6137/8212/files/82590204844.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/93102919133.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/9895726268.pdf
    • https://cdn.shopify.com/s/files/1/0438/2444/7638/files/73776097318.pdf
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/wuvixazafowobinozipa.pdf
    • https://cdn.shopify.com/s/files/1/0463/8962/4987/files/vevukubesatuser.pdf
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/bangla_job_application_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/pijegirixo.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_off000064d7.bin
6c1678326240e0af258df894c2cbcc6654bef4135a95f93874fe554f069d01de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D7 5912 bytes
font_01_sfnt_off000078f6.bin
3b4d6ca0cbbf27a9415ef57a84a3314dfc34790fd06ba06a93998fcc9db20ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F6 10276 bytes

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