Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a76230a6f4b89e9…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 12:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b88da66ccd361a99eeebd5d9cf6a2965 SHA-1: babcd722b917f364b8ed954abcfe2b73837400d0 SHA-256: 9a76230a6f4b89e9c81a7f2b809db7ae8320e2e97dabf1fb7b80a030669cc5c4
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1204.001 Malicious File

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm, with numerous links hosted on Shopify, suggesting an attempt to distribute malicious content or engage in SEO abuse. The document body, though heavily obfuscated, contains the same malicious URL and several other PDF links, reinforcing the lure. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document may also instruct the user to execute commands, further increasing the risk.

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=blu+ray+movies++tamil
    • http://files.pageantpommom.com/uploads/1/3/1/6/131637178/2077252.pdf
    • http://bikefatep.nfjoyfullibrary.org/uploads/1/3/2/7/132740214/5859634.pdf
    • https://cdn.shopify.com/s/files/1/0433/8391/4654/files/31188258218.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/t25_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0450/1922/files/media_queries_template.pdf
    • https://cdn.shopify.com/s/files/1/0447/1724/4570/files/seleo_natural.pdf
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/58748994534.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/antihistaminique_h2.pdf
    • https://cdn.shopify.com/s/files/1/0443/6351/4012/files/download_cake_by_the_ocean.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/52303664323.pdf
    • https://cdn.shopify.com/s/files/1/0448/0493/1746/files/85328973536.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000646e.bin
0eca958bc26b46c9834be650b7414b32eb5286eaa89bec5c1e50afc07d47fe7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 5040 bytes
font_01_sfnt_off00007587.bin
bba8fc4462aa86bbcc2a00d2e29ea5cc226949bec7e3b809283e7aa534262d5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 10548 bytes

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