Malicious PDF — malware analysis report

Static analysis result for SHA-256 3967fe84fabe150a…

MALICIOUS

PDF

38.3 KB Created: 2020-09-01 09:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bee7e0b13e27934a72ea5bc77d964c4b SHA-1: 9a07e73808bdaf164805f3f9915b6e4be2b3def7 SHA-256: 3967fe84fabe150ac2162e5e994dd5767ba9b7db8f596b9223ca27edb4027ad9
150 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. It also contains a large number of external PDF links, characteristic of a link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=kwanzaa+kinara+template, which is likely used to funnel victims to further malicious 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=kwanzaa+kinara+template
    • https://static.usrfiles.com/ugd/b8c837_ae06218149b2448b9d8164d7cf604aa0.pdf
    • https://static.usrfiles.com/ugd/9a242c_a07d65c929194919b02bfa796635b81e.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_1b6d72a1b48442b390afe995e425bd6c.pdf
    • https://static.usrfiles.com/ugd/a1fb72_b6cb1071e5424e2fac071b9f0dd6ce9d.pdf
    • https://static.usrfiles.com/ugd/d1d005_49f5b2b1e70e4dc199e8c891e0c5e0e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f2a3a6640ff47e9b4fd511f36012103.pdf
    • https://cdn.shopify.com/s/files/1/0446/9332/3929/files/antecedentes_de_los_derechos_humanos.pdf
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/sqlite_android_tutorial_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/46659014811.pdf
    • https://static.usrfiles.com/ugd/ae059d_fab90669873f4f77b43ec6c64bf88641.pdf
    • https://static.usrfiles.com/ugd/b8c837_12a2c57c7965420c90df64c0087b1f9b.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_off000059c1.bin
bf978663f7c5e7d6d53b61c519d77f7f969ebf514554028d69dff5f3abcf6c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C1 4964 bytes
font_01_sfnt_off00006aa7.bin
3e3c2afe43398a16493b87debd19fdeb600d2de23ec7944b691320cc0bbf10e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 10136 bytes

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