Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce70d7b65334b4ad…

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 06:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00261171c8f6694e4e6e8cd29046c2a8 SHA-1: df70eea9e69068ca586828e4303a87b18d11d8a7 SHA-256: ce70d7b65334b4ad0b37b2cddc256edc544bb74aa76a60d7a669f2089d5bf698
150 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, disguised as a "Dungeons and dragons rulebook". The document also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs hosted on shopify.com and static.usrfiles.com. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=dungeons+and+dragons+rulebook
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/2404157112.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/mexasemenorezukanilovoj.pdf
    • https://static.usrfiles.com/ugd/bfbc46_7927dbaa308f4db8aec6d4c666f55507.pdf
    • https://static.usrfiles.com/ugd/cf14a4_2ef6b34f74844f0f9f01b8489c9a3069.pdf
    • https://static.usrfiles.com/ugd/ab059d_47bf8cadf78143499bf23fcc61b57e3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af0223be4134b44aeaca6abddd61bdf.pdf
    • https://static.usrfiles.com/ugd/9219f8_aa006d611fde44c4857a727795eb7b1e.pdf
    • https://static.usrfiles.com/ugd/5438e3_14c4f7828ffd498d98a4dbd107a75231.pdf
    • https://static.usrfiles.com/ugd/2b25b5_4a73dbb101474aa894437922a31f0401.pdf
    • https://static.usrfiles.com/ugd/b8c837_471ef8e33f964ebba8d3aa96f8b02e83.pdf
    • https://static.usrfiles.com/ugd/5a1791_e351127ea42842f3998ad8d85a0bf8b8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c1d.bin
d5d4c54ec0685c5aaf676f18d840f444f12f681c92966e2b7f3d20f9650d910c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1D 4948 bytes
font_01_sfnt_off00005cfa.bin
4089c6331a576bf38625d407ead50f291d4280b1b128079706bb7a48b128e185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFA 10228 bytes
font_02_sfnt_off00007ffb.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFB 4324 bytes

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