Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aee728d865f0ba8…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 07:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e278370fb1007612a895e11e03ec729 SHA-1: e0ede7999fd9fbb137d58f6d17090345da378dc1 SHA-256: 8aee728d865f0ba8ddba3b8105b73b2753960386730fc41bacbd61edc6f2a8d4
120 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 of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=citra+emulator+requirements+android'. The document body, though heavily obfuscated, contains this URL and other embedded links, reinforcing the lure. The primary intent appears to be redirecting the user to malicious content via the ttraff.com domain.

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=citra+emulator+requirements+android
    • http://famaj.lovepuertoricogoldens.org/uploads/1/3/0/7/130738732/4714862.pdf
    • http://wutipoj.124line.com/uploads/1/3/1/3/131383664/lukutiw.pdf
    • http://files.pelegreenberg.com/uploads/1/3/2/6/132695445/linivepos_lusufad_wubozi.pdf
    • http://files.stencilgenie.com/uploads/1/3/1/4/131408741/xogib.pdf
    • http://vobel.eldoradohillsarts.com/uploads/1/3/0/8/130814017/5114976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0449/9308/5598/files/kubuzo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/mowalutag.pdf
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/48826955764.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/video_converter_software_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/28680423904.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/80157308148.pdf
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/temanulesiwufeta.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_off0000648a.bin
a9585d4de69faa1953e7e5a6c473fc5a5e8beca9a3de770ee39bb4bf90ac9596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 5004 bytes
font_01_sfnt_off00007566.bin
b86ea55021d99920197b21a00e68e4474e566f6cb24355b5b270c15749bd4927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7566 10156 bytes

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