Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbfa0913e96603e4…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 06:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65742d9192e5e29bb058554648a00532 SHA-1: 03ac87a0fed34f2ed7f286213f0c72c45ef32196 SHA-256: cbfa0913e96603e4f2d0bfa6fdd6eeb1fd7a36480d3b36a285c420fbf3ea0c42
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, pointing to 'https://ttraff.com/wix?keyword=mordenkainen%2527s+tome+of+foes+free+pdf'. This URL is embedded within the document body, disguised as a link to a free PDF. The document also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The primary malicious IOC is the ttraff.com redirector, which likely serves as a gateway to a phishing page or malware download.

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=mordenkainen%2527s+tome+of+foes+free+pdf
    • https://static.usrfiles.com/ugd/34e21e_1b60788725ec4be284ec0866f5bf9f18.pdf
    • https://static.usrfiles.com/ugd/be19e1_47dd3b5d25cb461c8c714a737cd895f6.pdf
    • https://static.usrfiles.com/ugd/628a76_ea4f54639cdc45fc9e29f0561bc1b779.pdf
    • https://static.usrfiles.com/ugd/b8c837_53dc5c50d03d4dca8048a1457711c668.pdf
    • https://static.usrfiles.com/ugd/c068f8_297b8602fac34d95bb25c3356d48cf9e.pdf
    • https://cdn.shopify.com/s/files/1/0450/6091/5350/files/amines_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3649/1431/files/18174326427.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/24088902860.pdf
    • https://cdn.shopify.com/s/files/1/0459/9601/5773/files/epanet_software_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/57698668624.pdf
    • https://cdn.shopify.com/s/files/1/0444/2020/2663/files/basidobedofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/online_convert_to_word_ocr.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/lilusefobudamudenok.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/zupejiwixegegimodesosif.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_off000049f4.bin
d1d13ce444baac80e39877c59fbf4a40a6cbef61d5fc1a9c5a26c0681d4c1768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F4 5256 bytes
font_01_sfnt_off00005bd3.bin
acd0eada3041ecdf5b3ed5da1600d36411462f65683c1911bf1f407f148a98bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 10100 bytes
font_02_sfnt_off00007e9d.bin
1d4ebd634e9a4b1afc3ba2e660f7abdbad7ecfb3c20c2fb0daf688bec4f9a1d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9D 16232 bytes

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