Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f01953217b999c7…

MALICIOUS

PDF

39.2 KB Created: 2020-08-01 21:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 907f8ef6752740c8c71f552d6edfef9a SHA-1: 619ff49a29a76229136e0e9a2175814c9cba3681 SHA-256: 3f01953217b999c7187c66ecaca410331fc7714d684e468188b4f961f205dda2
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external PDF files hosted on various domains, including Shopify. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final destination of the malicious payload. The presence of a link farm and a malicious redirector suggests an attempt to distribute malware or engage in SEO manipulation for malicious purposes.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=clover+boot+flags
    • http://files.racketeerrobot.com/uploads/1/3/0/7/130739982/6442442.pdf
    • http://files.remarcable.me.uk/uploads/1/3/1/4/131438245/nobinopovuzip.pdf
    • http://files.schoolofthoughtblog.com/uploads/1/3/0/7/130739919/db6cfd1f1496.pdf
    • https://cdn.shopify.com/s/files/1/0439/5863/2606/files/pomuzejonimepek.pdf
    • https://cdn.shopify.com/s/files/1/0429/0091/4343/files/6395725462.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/1757387388.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/59417356165.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/32353984541.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/mowexisemazazopox.pdf
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/43023173301.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/xawovizajepoluboxegutiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/jofowodugoduw.pdf
    • https://cdn.shopify.com/s/files/1/0436/4373/2126/files/gokatoxuzurerekiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/33854917394.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_off00005cbc.bin
b6fa7ae3945ebdcc99c810ca2e126b8b8238fbe506de441cbea6dc356a38a431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBC 5040 bytes
font_01_sfnt_off00006df5.bin
f9441c84d31c02b757b6495f10a9aeaf47fbb831ea88a3f19367df89ee1633e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 10068 bytes

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