Malicious PDF — malware analysis report

Static analysis result for SHA-256 b298c5523b67171f…

MALICIOUS

PDF

47.4 KB Created: 2020-08-19 10:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fc69e9c3d1df82ce6c5c9e42c16d2d1 SHA-1: c8cc32d3f5b7cd7a054dcb91c31c62d272967b94 SHA-256: b298c5523b67171fb0952f9bbef7dfdfa814910817dc1f157314b683a0c6796c
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body itself contains the target URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=arum+kanna+malayalam+song
    • http://files.totalbikeworks.com/uploads/1/3/2/6/132695399/6e32bccf.pdf
    • http://files.supernovabliss.com/uploads/1/3/2/6/132695805/lovagodudilujojux.pdf
    • http://sopepun.aumyogaannarbor.com/uploads/1/3/0/8/130814124/57af9c07d49e29.pdf
    • http://files.themagpiesmusic.com/uploads/1/3/0/9/130969689/movisuzagilep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/zetunawekerelugoze.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4815/files/91062217093.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/35760156957.pdf
    • https://cdn.shopify.com/s/files/1/0430/2009/1555/files/alimentacin_sana_equilibrada.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/zavumidosekifojuxafu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/bodukabopusivizinev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/colonel_bogey_clarinet_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2067/files/gavalemabisufaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/pink_martini_sympathique.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/jufufanopoxowisotebumise.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef3.bin
05e32a679655315b1b24176726ed7d64c979e4755506d6f0c2d544e2c48eaae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF3 5160 bytes
font_01_sfnt_off00007065.bin
c640591859e8253623499e242b9e05f05e3872690c7cfc0f2201c5e97fd69ba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7065 4736 bytes
font_02_sfnt_off000081f6.bin
31aedea12edc12f259586f72feaab0c73f11520a8ac82a721abc6963bf1438cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 14908 bytes

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