Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3783146bc10a5df…

MALICIOUS

PDF

44.8 KB Created: 2020-09-12 01:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d75674360c0c6ae8929500db5a0f9cbb SHA-1: ca43a57375936b30f788945fcb069569d9f0509e SHA-256: c3783146bc10a5df4262e86bc70276f65cb67204fa4d51cd6b447ff1187afd26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566.002 Spearphishing Attachment T1059 Command and Scripting Interpreter

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=legal+agreement+document+template'. Additionally, it exhibits a PDF link farm behavior with numerous external links, many hosted on static.usrfiles.com. The document body, though partially garbled, contains text suggesting a 'legal agreement document template' lure and includes the malicious redirector URL. A heuristic also indicates a lure for clipboard command execution, suggesting the user might be prompted to copy/paste commands.

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.me/wix?keyword=legal+agreement+document+template
    • http://files.shepherdhills.org/uploads/1/3/0/9/130969580/nimubutaw-nisadam.pdf
    • http://pusijoji.michelleponeleit.com/uploads/1/3/0/8/130814411/5394670.pdf
    • http://toxezomet.palmerstexas.com/uploads/1/3/0/7/130740019/7446179.pdf
    • http://files.cvillematerials.com/uploads/1/3/1/4/131437669/8efc3ea30714.pdf
    • http://files.emotionalfreedomwitheft.com/uploads/1/3/1/6/131636655/jotofotovijelenebi.pdf
    • https://static.usrfiles.com/ugd/c3548c_8b9b06cc28a64fc288a2cefaa5ab2ed2.pdf
    • https://static.usrfiles.com/ugd/585b1d_7053e165b91f49328da95a17fb0f4496.pdf
    • https://static.usrfiles.com/ugd/69a512_a67aa366a001455c9b67ff44e3565405.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_46f5ef0254a6436ab4026df4f9c6b269.pdf
    • https://static.usrfiles.com/ugd/b50c55_ada44de6d48c47be98a87b55be801ac2.pdf
    • https://static.usrfiles.com/ugd/cd1d52_900be3ebfa4d4abfa910a3fcda57a05c.pdf
    • https://static.usrfiles.com/ugd/7a359d_d13578fe7885413e8d57cc24c940b373.pdf
    • https://static.usrfiles.com/ugd/8b4172_95d97559ab5040b48fec8bddb6eba280.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/chamma_chamma_new_song_video_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/ir_2135ti_max.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/hapkido_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/lenewijuv.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_off00007253.bin
040c30afc55a011fcdd347daa9e49f3bbe147ebc18b34e6a802ae57811a9fd92
pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 5156 bytes
font_01_sfnt_off000083cd.bin
2a23b7cd8915fb1b556709223e1c0888d8b4480fb40a348902edb488af4c5676
pdf-font-stream PDF embedded font (sfnt) at offset 0x83CD 9952 bytes