Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ea21f64cefd4f9…

MALICIOUS

PDF

132.6 KB Created: 2020-09-08 00:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64a4934413908cbb7e8b0b7bfd0d2c39 SHA-1: 0609b97fffc5a65015966d82667948c23157a15c SHA-256: 96ea21f64cefd4f97730989d3a8ca02e3223094ec18d1a69b7a5183d34824649
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=how+is+basalt+formed+diagram'. The document body, though heavily obfuscated, appears to contain this URL, suggesting a social engineering lure related to the search query. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO manipulation or to obscure the malicious redirector.

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/wix?keyword=how+is+basalt+formed+diagram
    • https://cdn.shopify.com/s/files/1/0464/7560/8214/files/libro_sagrado_del_hinduismo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8837/1107/files/33692045342.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/neboburitezi.pdf
    • https://static.usrfiles.com/ugd/3eed2b_df44b27a190842ccb65b603f00cb1641.pdf
    • https://static.usrfiles.com/ugd/f35da0_6ad567d6dafb429c815a9846bbcb2915.pdf
    • https://static.usrfiles.com/ugd/837d34_089bee164f1f4a7e907891fb11cd1660.pdf
    • https://static.usrfiles.com/ugd/943725_0578a3c33e134803a41b435536c53719.pdf
    • https://cdn.shopify.com/s/files/1/0462/6232/1301/files/monthly_timeline_powerpoint_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/zomenokofujirutakisu.pdf
    • https://static.usrfiles.com/ugd/80c1db_d01c18bb307249ab9d98b2bffb0c0ab1.pdf
    • https://static.usrfiles.com/ugd/ac51ce_931e2287ce9544dea114ed143923719b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b348.bin
0a6fa99a927756323331773e6648d32abe56c7a45ce1131f5b5db137418681e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B348 4532 bytes
font_01_sfnt_off0001c2f0.bin
ed4bd48ecdeccdb1d45c0d7ba597a33e348c57a765b1774c6785181b5b9e7bfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2F0 5420 bytes
font_02_sfnt_off0001d55b.bin
00d51abac02a264e17a2b9373f14998b166ad6b0dcda8a6c40a29a85524fbbae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D55B 14688 bytes

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