Malicious PDF — malware analysis report

Static analysis result for SHA-256 327789b1d5ef8c7b…

MALICIOUS

PDF

55.5 KB Created: 2020-08-01 06:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fbbdcc77a7f1af1b92ffa6b9fac5aed SHA-1: bdcca5741e6aad6760d4774232df11156323bbc8 SHA-256: 327789b1d5ef8c7b439202cecaf2eca11ba9e53bf55d7b81485ed7deb8fcd3ca
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also present in the heuristic firing. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. The presence of multiple Shopify links indicates a link farm strategy to obscure the final malicious destination.

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.com/pify?keyword=sri+lalitha+sahasranamam+telugu+pdf
    • http://files.sockfetishsocks.com/uploads/1/3/0/7/130776291/5741799.pdf
    • http://files.discoveration.org/uploads/1/3/1/8/131856516/pidolafusozu_vedusisun_judaselu.pdf
    • http://files.lucasscholars.org/uploads/1/3/0/9/130969724/c8e45.pdf
    • http://files.lowefield.co.uk/uploads/1/3/2/6/132695663/kinaferuwin.pdf
    • https://cdn.shopify.com/s/files/1/0437/7883/4586/files/turtle_beach_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/42774754962.pdf
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/kunedogixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/jquery_if_viewport_width.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/66481539949.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/nufififukusekev.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/19450214238.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4005/files/selenium_python_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7264/files/85329563645.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/zunetusezumijobaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/loxezukuzigigodegapasozik.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9304/files/99422323277.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/58349913439.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_off00008e55.bin
f3b49a7b41a9fbcd468d45f9e1e98533ef52e42b084fe59fdd45df2659152943		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E55 5560 bytes
font_01_sfnt_off0000a10d.bin
f79b2e083664300309bb0943ca58a39e10911b78e6cad342ac9f7715cd737c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA10D 16188 bytes

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