Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc95ad1a039fd9f3…

MALICIOUS

PDF

38.2 KB Created: 2020-09-17 17:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd662bc57a69a78a8c64b5fb8e03d15c SHA-1: 5ec567891635aba558e1591fbccd8f0c5a305a3b SHA-256: cc95ad1a039fd9f3deb2f3db2eaf910929a7c088f208363c9a671393b759edf4
160 Risk Score

Malware Insights

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

The PDF contains a link farm and a lure for remote support tools, directing users to click on a malicious redirector. The primary malicious URL identified is https://ttraff.link/wix?keyword=la+ciudad+del+olvido+frases. The document body is heavily obfuscated and appears to contain embedded URLs, but no executable scripts were extracted.

Heuristics 4

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.link/wix?keyword=la+ciudad+del+olvido+frases
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/54456497738.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/12471962838.pdf
    • https://cdn.shopify.com/s/files/1/0464/7383/8750/files/teamviewer_12_link.pdf
    • https://544c465d-0bec-4bfb-8e28-005ac76d0624.filesusr.com/ugd/9f06f8_29f29437998a471fbcaa10fd03cab1d2.pdf?index=true
    • https://2f8b8576-ace9-4118-b4ba-4bde345ac8a0.filesusr.com/ugd/c33cdb_850f6df21bf44be48fdeb7b91732323e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/bozawejov.pdf
    • https://cdn.shopify.com/s/files/1/0459/8920/0029/files/idina_menzel_at_this_table_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/48929000771.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/uml_con_rational_rose.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/7534110026.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/84940993543.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_off00004940.bin
a8927a04edf3f18f7012e2c22c0a7617a53eb3e2ec3302edc73a212c6fde2073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4940 4712 bytes
font_01_sfnt_off00005951.bin
d27eeec61664d3e9d1815cefccf0b2431c6d25a685f3d1484087f862cfb5cb5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5951 10908 bytes
font_02_sfnt_off00007cc8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC8 4324 bytes

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