Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e19df00a33a971…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 03:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34bdee11ba12206ba8fe46783c2ff33c SHA-1: f2289a43127719c4380bccc7b03280c364c10384 SHA-256: f2e19df00a33a971daca438e5800cd8c47672f416f877bd1c76b4c559e2975c5
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=os+x+recovery+disk+assistant'. Additionally, it exhibits a PDF link farm behavior, embedding numerous links to other PDFs, likely for SEO manipulation or to obscure the malicious destination. The document also contains a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running malicious code. The presence of these elements indicates a malicious intent to redirect users to harmful content.

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/wix?keyword=os+x+recovery+disk+assistant
    • https://cdn.shopify.com/s/files/1/0432/0123/3053/files/48491946107.pdf
    • https://cdn.shopify.com/s/files/1/0437/7224/8215/files/limog.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/muzupivovabekudobimes.pdf
    • https://static.usrfiles.com/ugd/136d07_8fda55c366e5416baf0fb08b6dcac448.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_ab82fcab13524d76bb7979a91c9dbe02.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/36623381267.pdf
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/10397890876.pdf
    • https://cdn.shopify.com/s/files/1/0435/7029/9048/files/unitech_cable_tray_catalogue.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b4014c6baa24e85b730d37e90d6527e.pdf
    • https://static.usrfiles.com/ugd/98857b_862526a9f21043bdb323171bf2aff447.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_6e16f45ac3ac4cd18e1516a40ec2322e.pdf
    • https://static.usrfiles.com/ugd/ab0441_15811e89ff374b4391b3b3bd27f3252c.pdf
    • https://static.usrfiles.com/ugd/e5a943_8c704d4af0224a009323aff7c40a9100.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_off00005f39.bin
36dfd57e9c50358d131b90f5686b52ff57467925b247e1e527bcce496ef44c04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 5220 bytes
font_01_sfnt_off00007115.bin
a82811cfa3bfed721b4473fa60b45fa8c968082ab8a88863640ca823a2b3886b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7115 9888 bytes

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