Malicious PDF — malware analysis report

Static analysis result for SHA-256 805ea3bcbf29da0d…

MALICIOUS

PDF

42.9 KB Created: 2020-09-01 15:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77aa71c6a013ecb4ad16c20751c1f081 SHA-1: 07e9d344dc35b29666c7038dd53f8c7c1a37df8d SHA-256: 805ea3bcbf29da0d3cf3a7e08ab189dde0ea077696830eeeb77bd54b8bca0c45
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common tactic for delivering malicious content. The document body, though heavily obfuscated, appears to contain text related to 'Batman Arkham Knight Mac Free' and the redirector URL, suggesting a lure to trick users into clicking the link. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or traffic redirection.

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.cc/wix?keyword=batman+arkham+knight+mac+free
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/cromosomas_y_cariotipo_humano.pdf
    • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/8802065439.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/pebevixifojilefamewibu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/free_icons_library.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/75642351599.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2918/files/fawupexiripixugufelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7738/5892/files/zaran.pdf
    • https://static.usrfiles.com/ugd/bb13a2_8d9dcc0ee98347c7803e0a333a5a161e.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2dc6f51ced54dae93e4e6602c1a9efa.pdf
    • https://static.usrfiles.com/ugd/82e28d_ae7aae39d87540b68d1ab578c0a7d26c.pdf
    • https://static.usrfiles.com/ugd/98857b_7084f9c4eb2b4cb8ac67873898bc41cf.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_off00006397.bin
747b91f71e65340e6e38e5e3ffbadc71a99fb25d16f5067443be4064a2507018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 5200 bytes
font_01_sfnt_off00007526.bin
7d16977f7a175b5b186924d8d44ea136745934107c84806638270558da8bacc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7526 13208 bytes

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