PDF malware analysis — malicious · 4b3dee62c8b37476

MALICIOUS

PDF

48.0 KB Created: 2020-07-20 21:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9f9e701fb5306a4f65f47e730ff01c53 SHA-1: 9f25247592a90e0b281d45bfe4eb3070eb73e2b1 SHA-256: 4b3dee62c8b374765f9bde9f8ec9688f6f5d2a308244516813d93e3d40892c6b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, disguised with a seemingly innocuous keyword. Additionally, it hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to increase visibility. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=popsicle%20stick%20bridge%20project%20pdf
- http://files.beaverpastoralcharge.com/uploads/1/3/1/4/131437969/9794437.pdf
- http://files.nunes-ueno.com/uploads/1/3/0/9/130968956/9a1404c29.pdf
- http://files.apollosmartbet.com/uploads/1/3/1/4/131438449/xabuwojiponako.pdf
- https://cdn.shopify.com/s/files/1/0437/7850/6904/files/tupunisiv.pdf
- https://cdn.shopify.com/s/files/1/0435/9431/7981/files/63356291636.pdf
- https://cdn.shopify.com/s/files/1/0429/5376/9126/files/pomulotokikifupito.pdf
- https://cdn.shopify.com/s/files/1/0428/3911/3895/files/17136805276.pdf
- https://xurujasija.files.wordpress.com/2020/07/59816412536.pdf
- https://lurufoduge.files.wordpress.com/2020/07/18757712233.pdf
- https://xikijowo.files.wordpress.com/2020/06/lagapumakenuwuve.pdf
- https://fozevet.files.wordpress.com/2020/07/pemusamanukilabovutomowux.pdf
- https://pasarilarob.files.wordpress.com/2020/07/72123352628.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
- https://cdn.shopify.com/s/files/1/0429/6946/4991/files/86692156751.pdf
- https://cdn.shopify.com/s/files/1/0432/3858/8584/files/28122451966.pdf
- https://cdn.shopify.com/s/files/1/0429/3227/3319/files/94318464582.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
- https://cdn.shopify.com/s/files/1/0429/1179/3315/files/fetomomawapexiw.pdf
- https://cdn.shopify.com/s/files/1/0430/5072/9634/files/fitelomenuga.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/
- https://cdn.shopify.com/s/files/1/0429/5376/9126/files/pomulotokikifup

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007f10.bin` `b4c8f7edab555221c9df6f7830e6e632fd68742e51a5dbb2b96030384682b3a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F10	5076 bytes
`font_01_sfnt_off00009061.bin` `855ec7713c88907fcb80c9b74a014355fa20327f3470aa5df5f3f7f48177d053`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9061	10080 bytes

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