Malicious PDF — malware analysis report

Static analysis result for SHA-256 9824ceb59e887fdf…

MALICIOUS

PDF

50.0 KB Created: 2020-07-27 02:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e78db3c913ffdcedb6dd46d7a79a81 SHA-1: fec5cf8a8316585387b78650349bbfd1ea5f897f SHA-256: 9824ceb59e887fdf1f6fb6e967f7028ac65a2f00f81af6ba58f5cc75e0a4873b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. This suggests the document is designed to lure users into clicking malicious links under the guise of providing a 'software business plan'. The presence of numerous Shopify URLs, while some are benign, contributes to the link farm characteristic.

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/pify?keyword=software+business+plan+free++italiano
    • http://files.williamblakefilmmaker.com/uploads/1/3/2/6/132695749/nakofase.pdf
    • http://files.citybeerfest.org/uploads/1/3/0/7/130776639/5b50a69444.pdf
    • http://files.studio.dayafoundation.org/uploads/1/3/0/7/130776508/gatepodoragumazara.pdf
    • http://files.aedutah.com/uploads/1/3/0/8/130815058/5807955.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/96501037816.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/25559248605.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/ladix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5571/8298/files/8991920024.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/zegofovosiwib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/78897845183.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/zomemekuropisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/zizibakitemas.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/kexalinonubetitebep.pdf
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/dadupebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/1730881862.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_off000085c6.bin
9c2bfe501a5341ae61b052c20a2f801ae19bfdf7fbd0ba43a3960ea2319197e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C6 5112 bytes
font_01_sfnt_off00009738.bin
0765e61b3c41c3a00bf776687003305a29f4155a24e9dad4139cb2d271df6e33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9738 10256 bytes

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