Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d1892f7cc7dc57…

MALICIOUS

PDF

39.0 KB Created: 2020-08-30 17:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6ee083dbddc9530d595533c03a4f96 SHA-1: 05bf638fbfa400c969dc1695b82736b067ebebda SHA-256: a1d1892f7cc7dc57e2152f006a0c10999a81bd24b36d14b55e6ad524fcb12a46
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 pointing to 'ttraff.com', which is used in a lure for 'arabic keyboard download'. The document also contains a large number of embedded links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection. The primary malicious URL is https://ttraff.com/wix?keyword=arabic+keyboard+download, which likely leads to a further malicious download or redirect.

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=arabic+keyboard+download
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/32786852343.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/fugaruzogina.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/39166537601.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/9162053547.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/google_sheets_isblank.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/99219661538.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/96629232548.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/mugijeruputo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/zofumopefaledokifezameko.pdf
    • https://static.usrfiles.com/ugd/576447_c4cff3625daf42d99cd1e62b7d8d4316.pdf
    • https://static.usrfiles.com/ugd/c1615c_3cdd3ac66b6246ae9e30b2bfee989dcd.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b096c093df247f990f3b43c424a6382.pdf
    • https://static.usrfiles.com/ugd/b8c837_543b5a50d46d4b958a8b9a990f65ede4.pdf
    • https://static.usrfiles.com/ugd/b8c837_61677cb99af14ffdba4d56cdaf060e8d.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_off00005b43.bin
86b1c5b65deeb93d12bfe0e8acf76ef3d71f7eba4c7be3ac1c56ea5a43864ff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B43 5140 bytes
font_01_sfnt_off00006cdf.bin
c81fe4edc5225cf9785f7abfacf600ba6a245c916a2aba5b7875dba5fdbfe02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDF 10084 bytes

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