Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa66971ebd439df…

MALICIOUS

PDF

51.2 KB Created: 2020-08-01 21:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 915a0ce23e78fcb71c3599ed1e84b391 SHA-1: 0b235fcf884286cd571194215e6a63d95711c45a SHA-256: efa66971ebd439df940c0e13f2cbf6efdcf86aa02aa59f30ebb79a8b30b43b8d
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=add+github+repository+to+local'. Additionally, it exhibits a link farm pattern with numerous external PDF links, including one hosted on cdn.shopify.com. The document body instructs the user to copy and paste content into a shell, indicating a social engineering tactic to execute commands or visit malicious sites.

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.
  • 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
  • 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=add+github+repository+to+local
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdf
    • http://files.artscienceexhibits.com/uploads/1/3/1/3/131384414/c0fd30eb0.pdf
    • http://files.conventionentertainmentorlando.com/uploads/1/3/1/1/131164542/8ffd45020ea.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/31498843545.pdf
    • https://cdn.shopify.com/s/files/1/0431/1764/1879/files/75342289815.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/33706648161.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/99723414725.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/26785287766.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/luduvi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1600/9374/files/nuxava.pdf
    • https://cdn.shopify.com/s/files/1/0439/8976/2206/files/bamirawomifis.pdf
    • https://cdn.shopify.com/s/files/1/0438/5092/4182/files/87631551128.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/5532292466.pdf
    • https://cdn.shopify.com/s/files/1/0435/0712/2342/files/lopip.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/lokenonibodanezifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8802/files/45251129930.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/sovajomoporude.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_off00006afd.bin
6e6b8e49dc6a1aa6b8e1a3b5204afd8061fc03b85b57fb8200439633efe81058
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFD 5972 bytes
font_01_sfnt_off00007f5a.bin
56ef4f0f2f36c90a42268d92a196c35e96d5b0209390a007f5b5f4509fbe1594
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5A 5564 bytes
font_02_sfnt_off00009242.bin
481b31eb184e9d6b80704960330944505b1a2e3a8f509f23920d2ac7eb4ac3d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9242 14348 bytes