Malicious PDF — malware analysis report

Static analysis result for SHA-256 36119f8ab79d3c68…

MALICIOUS

PDF

43.1 KB Created: 2020-07-31 22:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8648abf3f057c7c6446a7a2cad7a95f0 SHA-1: d4f4ca413cb1d625387d47e2d39b269bf354a58f SHA-256: 36119f8ab79d3c685e37cca7cfdeb0403622a6e7216f53b9536030877ae3f246
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text '94. 9 tampa radio' and the URL 'https://ttraff.ru/pify?keyword=94.+9+tampa+radio', suggesting a lure related to radio or a specific location. The presence of numerous Shopify-hosted PDF links indicates a link farm designed to distribute malicious content. No scripts were extracted from this sample.

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=94.+9+tampa+radio
    • http://files.middsga.com/uploads/1/3/1/4/131455621/pisaruzudabimakaxe.pdf
    • http://files.mrmcgintysmonarchs.com/uploads/1/3/2/3/132302993/6340693.pdf
    • http://files.pukalanicommunity.com/uploads/1/3/0/7/130776308/jutafozewupu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5696/3479/files/16680931683.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/74646912045.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/61135032874.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/fukefodavajiximak.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/degevaweluxajajaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/43968106939.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/86465828100.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/46497241282.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/repopumusamamipaze.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_off00005fa4.bin
dc9506867868d6fae2b45767a509aab7590e9f68702517501403efdbdd87ecb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA4 4640 bytes
font_01_sfnt_off00006f64.bin
ead5e39236f555ed35999692ed9dba45b02f72dfe7f7d90234d813b31c8ff431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F64 10112 bytes
font_02_sfnt_off0000920a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920A 4324 bytes

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