Malicious PDF — malware analysis report

Static analysis result for SHA-256 e513ded3a84afecd…

MALICIOUS

PDF

44.5 KB Created: 2020-08-13 07:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 834a32f5247d4e8220e41ea45e36a8f4 SHA-1: 5a48a9fcb9b2928e84cbb2bdbcde8661c36906d3 SHA-256: e513ded3a84afecd38e44b29c37ac40f4bae837c2231d5998737be25bb4e9a73
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site disguised as a tutorial PDF. The presence of a large number of external links, many pointing to Shopify domains, indicates a link farm strategy, likely to improve SEO for malicious content.

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/wb?keyword=distributed%20dbms%20tutorial%20point%20pdf
    • http://files.shannonedwardsphotography.com/uploads/1/3/1/4/131453555/148161.pdf
    • http://files.joantenenbaum.com/uploads/1/3/1/0/131070485/zamokijufizapi.pdf
    • http://gumikuvip.teresastrachanwoventextiles.co.uk/uploads/1/3/1/3/131384714/fitarusud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0360/0286/files/57700851715.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/26467564989.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/pelakivupejivopixuminoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/storm_in_a_teacup_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/lagopewuzugirila.pdf
    • https://cdn.shopify.com/s/files/1/0431/8733/9413/files/23611247091.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/3000/files/pugesa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/human_anatomy_and_physiology_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/safozukapolobinojese.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bagubiginapir.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/dosowamufubafojiribe.pdf
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/33143839825.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_off0000634c.bin
f04c5ca872ebb700e3a2aeb69e4002e5b6c595d3246bfd1500471865d18091bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634C 5208 bytes
font_01_sfnt_off000074d7.bin
5a9d47f97a04206fed4b30ce82cf7d1c36fed97c2858d4edd9373b2236786e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 9936 bytes
font_02_sfnt_off000096d2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96D2 4324 bytes

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