Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7209d8573f855c…

MALICIOUS

PDF

38.9 KB Created: 2020-08-30 03:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1216bd6c34b72b6b60b519cf6a0fa985 SHA-1: 0ccf203dd5f5f075cd32314df545abecb5dc69f2 SHA-256: db7209d8573f855c7c18e8663cf616a4590b2dd906d32e6d013922058a83d27e
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is associated with a download lure for 'vcomp100.dll'. The document also explicitly instructs the user to copy and paste content into a shell context, indicating an attempt to trick the user into executing commands. This combination suggests a social engineering attack designed to facilitate the download and execution of a second-stage payload.

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.com/wix?keyword=vcomp100.dll+32+bit+download
    • https://static.usrfiles.com/ugd/9b7d8a_a065d1323f7e45bdbb0f4ff21b5e7eb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_38281d21d2b74252840743180cf1cba7.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa8cf9795c584fa1aabfd951385e264b.pdf
    • https://static.usrfiles.com/ugd/8a419d_27bb382968bc4e05b42773aaf32ed56d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1285a1d03aaa434186f99d8ee747aa87.pdf
    • https://static.usrfiles.com/ugd/5de1df_580e04f97fa848369b577e33dc9043bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_33ed2aa250824ee2b529c83309b153c1.pdf
    • https://static.usrfiles.com/ugd/9e53d4_d86a0898ad4342cc89d1f2b7b73d3bda.pdf
    • https://static.usrfiles.com/ugd/b8c837_7642f6ffc28645288c5cd434533edc10.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd1238f0b46d4037a71f11897567eaff.pdf
    • https://static.usrfiles.com/ugd/b8c837_377eb5b8a1364edd89a3078e171b4596.pdf
    • https://static.usrfiles.com/ugd/e4ff69_183fe7ae2833415ea7a79bea2eaa77c3.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_off0000580d.bin
772ffb8c7ccc914925901a28adc77455e840e70bbe9cec4d434c7d7b0a828094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580D 5664 bytes
font_01_sfnt_off00006b59.bin
fffa48072dfa17d9c3b9f5014d278fa8dc63f814e0e6cfe7e61d5d6d01db12ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B59 10708 bytes

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