Malicious PDF — malware analysis report

Static analysis result for SHA-256 45088220441c023a…

MALICIOUS

PDF

49.4 KB Created: 2020-08-06 15:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5148d349416a215a71c906e8a7067d1c SHA-1: 560979f091120baffa4c0bc430091e3a4bab3837 SHA-256: 45088220441c023a7e97022d0de4a6da046130a3f9a46599144fb8b6171df302
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be luring users to malicious infrastructure disguised as a vocabulary game PDF.

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/pify?keyword=advanced+vocabulary+games+pdf
    • http://files.firstsounds.com/uploads/1/3/0/7/130775471/lufesikipu.pdf
    • http://files.rrwomensclub.org/uploads/1/3/1/1/131163859/waxokuro.pdf
    • http://files.lincolnfencecontractors.com/uploads/1/3/2/6/132681938/7c5f525598fb.pdf
    • http://waredarug.seekingthepast.com/uploads/1/3/1/3/131380042/2d8a2a8ca6f3.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/xikisogepijepesijodetut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/20068602262.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/9899907028.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/zapizeva.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/how_to_view_source_code_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/goradarapazegi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17524121831.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/arduino_pulse_width_modulation.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/juleruti.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/safety_data_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/balinuv.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_off00006319.bin
bc57f46316a9f16d28163af31f9d2bfe1bdfc17cf38a3b8ab256f53597395dd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 5764 bytes
font_01_sfnt_off000076a9.bin
cd008f8d50b352213f06ba1f4b1b071cd966d7a6c71acff1aeabc275819a8311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A9 1832 bytes
font_02_sfnt_off00007f85.bin
f588d2decaf05d8b6f72be08bf9d2924170ae82244915d9e6448b81a75450676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F85 9796 bytes
font_03_sfnt_off0000a164.bin
bf0029f2f65a8d03fc5bc6dac3f89872448ee76276b38fcd79a4881ba082e330		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA164 16508 bytes

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