Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d9728993366496…

MALICIOUS

PDF

47.1 KB Created: 2020-08-01 02:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 812140446d7aa4e4f89135b77a1309e8 SHA-1: 856b69edd095782def6f22a1f2a24884c6cf41db SHA-256: 48d97289933664969f872fc3e863eb175ad65f2f6ad5917f99bc6e8c3bca71d7
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=in+aid+of+the+myreque+osrs'. Another critical heuristic identified a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute malicious content. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern is redirection to a malicious site.

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=in+aid+of+the+myreque+osrs
    • http://files.hungrylionbiketour.com/uploads/1/3/0/7/130739601/3841267.pdf
    • http://files.themeditatingcowboy.com/uploads/1/3/0/7/130740510/mazememofe-lelefex-rewami-tukazagimewovev.pdf
    • http://files.thamechoralsociety.org.uk/uploads/1/3/1/3/131380021/9272186.pdf
    • http://files.themeditati
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/natutijavodefimanadutob.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/tobepofokure.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/kikiwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/32089422666.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/rugas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6357/4682/files/15242593780.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/87282044718.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/69859615652.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/79697536156.pdf
    • https://cdn.shopify.com/s/files/1/0428/3816/3623/files/12890458302.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/36366324838.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_off00006dba.bin
c33477c0f5b7f79bc396a76360f7e98c774cc785bafad9ee8ebd17b7728759ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBA 5164 bytes
font_01_sfnt_off00007f13.bin
1569d75d3db7bf99544627c30212a88eb779f4183fdc6d17bce31343ae24d516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F13 10120 bytes
font_02_sfnt_off0000a163.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA163 4324 bytes

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