Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f69ab2c4386c2f…

MALICIOUS

PDF

37.2 KB Created: 2020-08-31 09:36:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 526ecb85b839e4a0a3494cf17b6a8195 SHA-1: fd99c9be7d8bf6ff998854c923b78e807d83d023 SHA-256: b6f69ab2c4386c2f3061f40290039d0adfefd877d75c3baddb8ad08909575b2e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to a URL that impersonates a washing machine manual. This link is intended to lure users to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify, suggesting a link farm or SEO poisoning attempt to increase the visibility of 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.cc/wix?keyword=indesit+innex+9kg+washing+machine+manual
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/pokemon_emerald_egglocke_rom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4098/1660/files/mutolug.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/nikapibulekazasop.pdf
    • https://static.usrfiles.com/ugd/b8c837_5864a253692f4af3a696c5af3a04d565.pdf
    • https://static.usrfiles.com/ugd/b8c837_896d13de34924b1e8fcb7f854960b5df.pdf
    • https://static.usrfiles.com/ugd/b8c837_f401b53bf37341ee9dabd946801f808e.pdf
    • https://static.usrfiles.com/ugd/cf14a4_a63bc02df3ad4a4ab6e40f7e6769fa6d.pdf
    • https://static.usrfiles.com/ugd/db1da1_d86f1f1514cc44d8a6facfd7e0b7150b.pdf
    • https://static.usrfiles.com/ugd/105a8c_61aee9b1c4fe451d851df5c97230752b.pdf
    • https://static.usrfiles.com/ugd/81d6a4_5d06e8624b624317b2a7e55592c64521.pdf
    • https://static.usrfiles.com/ugd/bf07b1_77c019bae122499c9437008c3db4131d.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/7655233043.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/fadomuwofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/lua_halls_of_ascension.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/50273156029.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_off000052bc.bin
3e4d4237e8a59bfa51aab19f72b7d65137a4a4a620875833bdf6397eda117122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52BC 5576 bytes
font_01_sfnt_off0000659d.bin
5e34d15a8097f290c2c1287556904f2100f2148097e5da4ee1d156ea34f21e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659D 10104 bytes

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