PDF malware analysis — malicious · e73a923c95d58d1d

MALICIOUS

PDF

46.4 KB Created: 2020-09-11 06:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a085ce5e7b7c6629a6bdd9cf25e86516 SHA-1: 8d8a2d67908c28ef208adacd131bb2b89bc05f62 SHA-256: e73a923c95d58d1d6fa7f873875e7275ef5a9b24eca33a0380fb3aec6a7aa006

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, a technique often used for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, 'ttraff.club', which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains references to 'bootice x86.exe' and the redirector URL, suggesting a lure to download or execute a malicious file.

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.club/wix?keyword=bootice+x86.+exe
- https://cdn.shopify.com/s/files/1/0436/0473/8206/files/pimiku.pdf
- https://cdn.shopify.com/s/files/1/0448/4985/6669/files/jigajatipujuwekavogurijo.pdf
- https://cdn.shopify.com/s/files/1/0427/4293/9814/files/93659415946.pdf
- https://cdn.shopify.com/s/files/1/0437/2050/7546/files/9170178827.pdf
- https://cdn.shopify.com/s/files/1/0431/6885/8276/files/2158557087.pdf
- https://cdn.shopify.com/s/files/1/0428/7456/8860/files/xijagupitux.pdf
- https://cdn.shopify.com/s/files/1/0437/2470/1847/files/55093545076.pdf
- https://cdn.shopify.com/s/files/1/0431/6368/0929/files/pikilurepebij.pdf
- https://cdn.shopify.com/s/files/1/0436/3078/8758/files/17908114377.pdf
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/80822336842.pdf
- https://cdn.shopify.com/s/files/1/0430/3188/8035/files/unikey_64_bit_cho_win_8.pdf
- https://cdn.shopify.com/s/files/1/0440/7223/9269/files/38965121524.pdf
- https://cdn.shopify.com/s/files/1/0437/9285/9293/files/delete_local_branch.pdf
- https://static.usrfiles.com/ugd/e9cba9_ef666a21b39a4eaa91883134cb7146f7.pdf
- https://static.usrfiles.com/ugd/800b88_7fcc5db86d284c00a007656a7802fb62.pdf
- https://static.usrfiles.com/ugd/4f270c_00d58e4eefbc488e9af6cc8dfed3a236.pdf
- https://static.usrfiles.com/ugd/e2c223_914e5b8353284c85854116b984947983.pdf
- https://static.usrfiles.com/ugd/b81754_7e85c378c98144408d102bdd4b26a39d.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ede.bin` `8f5c5773db0c47134d97af7f03fe6e1aa54d2266713d52e447bfc0e0a76bcb01`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EDE	4772 bytes
`font_01_sfnt_off00007f42.bin` `22f6467ecfac374e9f720ca0cb295f808dfcd7c38e91febd068a590275515313`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F42	14676 bytes

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