Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6da8ef87b7a6e51…

MALICIOUS

PDF

41.5 KB Created: 2020-08-28 13:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56fd266930cf006785444f432af1c57a SHA-1: 37df9a1bc593789c56ab22884cbd26caa8351b13 SHA-256: e6da8ef87b7a6e5143f4526ad58c70c3e7c48cfea3dd60324eb9f36656118b6e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=imaengine+for+pc', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a coordinated effort to direct users to malicious infrastructure. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=imaengine+for+pc
    • http://files.weareallprettystupid.com/uploads/1/3/0/7/130775063/20cec07b2c0ce46.pdf
    • http://files.procidareview.com/uploads/1/3/2/6/132682441/7888243958d9.pdf
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/tugegal.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/gudubi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/jawago.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/60102965743.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/27955015592.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/lugiratuwimud.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/35989505488.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/magemafaxuwafonoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3633/files/najesobivuxub.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4474/files/74377494610.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_off00006622.bin
090ffa6efc74556cea6fe72e706dc2d21684bc262d20c6bafb86a64bfb5dff40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6622 5060 bytes
font_01_sfnt_off0000773f.bin
5cb5972836eceedf1d98ccbf8db3fac2a5b669e5499ca64f7850b83511e5e8f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 10060 bytes

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