PDF malware analysis — malicious · eef6d26514d7babd

MALICIOUS

PDF

56.7 KB Created: 2020-08-02 22:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c35a252a89829a026b0bfff78e2015ee SHA-1: e7be73c301d604eaba1cff4bc23de615984e1b8a SHA-256: eef6d26514d7babda6337a8c447d41074fc6c17d9329965b98d439f99dffa163

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=vanquisher+medal+terraria', which is part of a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in a malicious campaign. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to obscure the ultimate destination or to leverage seemingly benign platforms for distribution.

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.cc/pify?keyword=vanquisher+medal+terraria
- http://files.buildingblocksnorfolkva.com/uploads/1/3/2/6/132695445/a40b6.pdf
- http://files.corneliusmullerproductions.com/uploads/1/3/1/1/131164475/polati.pdf
- http://files.leasidearena.com/uploads/1/3/2/7/132740870/zopimozifutivirole.pdf
- https://cdn.shopify.com/s/files/1/0443/0397/4556/files/electronics_second_edition_hambley.pdf
- https://cdn.shopify.com/s/files/1/0431/5080/3095/files/stardew_bee_house.pdf
- https://cdn.shopify.com/s/files/1/0434/1648/6040/files/ganimo.pdf
- https://cdn.shopify.com/s/files/1/0429/8915/8554/files/vegar.pdf
- https://cdn.shopify.com/s/files/1/0437/8748/5342/files/86251923985.pdf
- https://cdn.shopify.com/s/files/1/0435/3458/1919/files/27170599810.pdf
- https://cdn.shopify.com/s/files/1/0433/9784/1063/files/gerevoxutijepuwigi.pdf
- https://cdn.shopify.com/s/files/1/0427/7361/0663/files/48405627834.pdf
- https://cdn.shopify.com/s/files/1/0428/3714/7811/files/jebuje.pdf
- https://cdn.shopify.com/s/files/1/0430/9532/6887/files/4744206668.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/69977641657.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006383.bin` `c184b792f0e5080ccd6bcf34d865b3b9e0fad308209bc46465dcf62c3a661837`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6383	19484 bytes
`font_01_sfnt_off0000a129.bin` `4948766122ac59b68533abcb3748dfbf5653eee2b488cda2ca1a3cbb388b81a1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA129	5156 bytes
`font_02_sfnt_off0000b286.bin` `4224216c36b05374f06cb5a4b9580f478571b7b922dd8b4f5e9383e9ef9a7f3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB286	10288 bytes

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