Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f469bb16b4d8635…

MALICIOUS

PDF

43.0 KB Created: 2020-07-31 21:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5691c99c9e899d4b0f91ae50855923e5 SHA-1: c29f1f8b8423c270cbda2e30b16b93142ab18337 SHA-256: 2f469bb16b4d86357a55164c272d69138bdef7fbaf445a99a90961b8fc351999
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=mongodb+docker+compose'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, many of which are hosted on Shopify. The document body, though heavily obfuscated, also contains the aforementioned malicious URL and a benign-looking PDF link. The primary attack vector appears to be directing the user to a malicious site via these embedded links.

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=mongodb+docker+compose
    • http://files.miralamira.com/uploads/1/3/0/7/130775556/7695245.pdf
    • http://files.bakedbyalice.co.uk/uploads/1/3/0/7/130740012/gigevogoj.pdf
    • http://files.lakeside-kennel.com/uploads/1/3/1/3/131383456/6039803.pdf
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/murotafepez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5576/files/kukefuxavomixeveluwusexi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/fisef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/zuzivaforasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/titutelim.pdf
    • https://cdn.shopify.com/s/files/1/0433/5055/6821/files/fategoviro.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/wuvijewenewabas.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/87849668296.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/26892676533.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/vevibidovidazinerorir.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/97465117844.pdf
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/41165445221.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/77654197352.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_off000064b1.bin
e7b80b93650baf3e94e7f2b3d9271b3eb3740a97d0bfcefb383168013955aafc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B1 5360 bytes
font_01_sfnt_off000076e4.bin
fc080a58bfd93e22882090858ce857c4b51e708b0cbd6506a493f14a5bf2976f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 12404 bytes

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