Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb4d0cb76a67f68c…

MALICIOUS

PDF

62.7 KB Created: 2020-08-02 09:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cdcb1d77a308217094bfc3052d982b7 SHA-1: a300d2941aafd7590b47a40cc11536ea9529a224 SHA-256: fb4d0cb76a67f68c5d2c63663e649db686ef191f58dcd60a778ce0e3858fea97
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector. The primary malicious link, 'https://ttraff.cc/pify?keyword=ffxi+war+guide', is designed to lure users to potentially harmful content. The document body, though heavily obfuscated, contains references to this URL, suggesting it's the intended lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the 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.cc/pify?keyword=ffxi+war+guide
    • http://files.upjgreeks.org/uploads/1/3/1/0/131070674/batemudazap_wajemepovafozur.pdf
    • http://files.triadmanagementrealty.com/uploads/1/3/0/8/130814682/senolu-xilifunopuz-kufilazovagedu.pdf
    • http://files.denisecowleeditorial.com/uploads/1/3/1/4/131437932/lujujezudo_sapof_nuvipalubigesut_wewoxumabulexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/24929638691.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/lefofetut.pdf
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/76902303781.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/62653691276.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/46799032459.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/84886450039.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/lijidavufunagalupab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/mudobavinobigitudamuketo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/ge_documentation_library.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/6293960015.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/dogipukibeduligolomofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/23945059319.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_off0000b9cb.bin
41a979984d2c806703d63f71d03a3fdb1c3568d4e08b02fad68f575e539b7da4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CB 4980 bytes
font_01_sfnt_off0000cae7.bin
07d2aa17d7c4c66247b1344cf69125a61098b3488c7fac686ae4045cc2a00cbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE7 10388 bytes

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