Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a44481d59d708d…

MALICIOUS

PDF

47.1 KB Created: 2020-08-02 10:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44543c173b31b190ba9da5abf1a4a295 SHA-1: 2c36868ef8cdd4c48fe564bc91dc100df10a5b71 SHA-256: b8a44481d59d708de5559a360f01698efd51a2d508b86b47bd15c190e3e60f02
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to the presence of numerous embedded links, a technique often used to redirect users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flagged a link to 'ttraff.cc', indicating a known malicious redirector. The 'PDF_SEO_LINK_FARM' heuristic further supports this by noting a large number of external PDF links, many hosted on Shopify, suggesting an attempt to create a link farm for SEO manipulation or to distribute malicious content.

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.cc/pify?keyword=homelite+xl+12
    • http://files.ironsideranchllc.com/uploads/1/3/2/6/132695714/3129688.pdf
    • http://files.mxstores.com/uploads/1/3/0/8/130874284/8549011.pdf
    • http://files.relicredo.com/uploads/1/3/1/4/131483025/31f495410a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/6419013660.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/2129312778.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/tetoxefegidikikaliter.pdf
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/unity_dissolve_shader.pdf
    • https://cdn.shopify.com/s/files/1/0430/4030/9402/files/4352949954.pdf
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/94513222816.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/onan_generator_service.pdf
    • https://cdn.shopify.com/s/files/1/0435/1292/2264/files/29750841032.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/zofevivetexinuxaluvewiga.pdf
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/wiwulovididodemidin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/18257485315.pdf
    • https://cdn.shopify.com/s/files/1/0429/4157/9420/files/28131244137.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/canon_t70_manual.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_off00007c6c.bin
fbb04433bdc2ad98dd3ebca14946b3f22f87cb23a48c14fa1431c4d06a99a2ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6C 4560 bytes
font_01_sfnt_off00008be7.bin
5861425b17a125401798824c554e274aa1b41d4d32262ba85bcd53e7f47516c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE7 10420 bytes

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