Malicious PDF — malware analysis report

Static analysis result for SHA-256 24cc5e8f2ba18658…

MALICIOUS

PDF

47.0 KB Created: 2020-08-21 13:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90284ef807a8aa3265093898e63a4a8c SHA-1: 591386a767a0fd3060cd931116444e054e1cf4e5 SHA-256: 24cc5e8f2ba18658119203d4c42ef313507c271ae72f45a39e6e5a4ac9a23187
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link disguised as information about playing 'Clash Royale' on PC, which redirects to a known malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources, many hosted on Shopify. The primary malicious URL identified is ttraff.ru, which is flagged as a 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.ru/pify?keyword=clash+royale++pc+play+store
    • http://nasiri.canesmedia.org/uploads/1/3/1/4/131453293/9274032.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/kodisaliwosozalunolegowa.pdf
    • https://cdn.shopify.com/s/files/1/0450/9886/0707/files/monthly_timeline_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/7033/9737/files/nosirovebilatotit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/70491134872.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1798/files/73489369328.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/dynamic_html_to_nodejs.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/55094289515.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/5935243688.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/java_calculator_codes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/bunefijegetenopafofap.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/63063474122.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b0.bin
ad277ad21de5260ba51c27303470afb51c0ca5c02938d9297497a6d72a0a2ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 4780 bytes
font_01_sfnt_off00007103.bin
fde507d3e12ec33e68adf7e75fc7402ffd28b0db1492fb6dd1e3c49ab7b9519b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7103 3120 bytes
font_02_sfnt_off00007d88.bin
e1be002644d96101cc93972bfac3a56b745d1f756ce2ece76abe5cb5b7cb24fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D88 10364 bytes
font_03_sfnt_off0000a0ff.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FF 4324 bytes

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