PDF malware analysis — malicious · 8ef3c254ef09c3ac

MALICIOUS

PDF

43.2 KB Created: 2020-07-31 21:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: af9a611d1b9e4cb466fa8cf6d8c30a81 SHA-1: 35c05f60df84a382a165726e71425fc8d0e12181 SHA-256: 8ef3c254ef09c3aca22c9de12260707e26f0c9b5c48f77c84e9cc14bde3ff133

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URLs, including the primary redirector 'https://ttraff.ru/pify?keyword=kyle+gibson+fangraphs', suggest an attempt to lure users to potentially harmful content. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and URLs, reinforcing the malicious intent.

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.ru/pify?keyword=kyle+gibson+fangraphs
- http://files.evamargaretbrown.com/uploads/1/3/0/7/130775753/pokovodi.pdf
- http://files.rijanjewelryexclusive.com/uploads/1/3/0/7/130776757/a3c586.pdf
- http://files.theyogaconnectionstudio.com/uploads/1/3/0/7/130775735/7162043.pdf
- http://files.drvegetableinc.com/uploads/1/3/0/8/130874063/pasefozunogi.pdf
- http://files.samanthastewartofficial.com/uploads/1/3/0/7/130775565/bd35e8.pdf
- https://cdn.shopify.com/s/files/1/0432/8456/2086/files/2163118488.pdf
- https://cdn.shopify.com/s/files/1/0431/8075/3058/files/zivalidakitome.pdf
- https://cdn.shopify.com/s/files/1/0428/1221/1359/files/86529067820.pdf
- https://cdn.shopify.com/s/files/1/0428/0595/2671/files/55902632508.pdf
- https://cdn.shopify.com/s/files/1/0431/0577/9863/files/xivok.pdf
- https://cdn.shopify.com/s/files/1/0432/6513/0658/files/jupasiligo.pdf
- https://cdn.shopify.com/s/files/1/0430/3477/1610/files/90482272243.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/70366047338.pdf
- https://cdn.shopify.com/s/files/1/0433/4868/9050/files/guputiwekolevosapokam.pdf
- https://cdn.shopify.com/s/files/1/0431/0079/9140/files/sifitaroxowubimolokug.pdf
- https://cdn.shopify.com/s/files/1/0430/0416/6297/files/gijupopinarerobilego.pdf
- https://cdn.shopify.com/s/files/1/0431/6246/8514/files/vutudojefozijiwimu.pdf
- https://cdn.shopify.com/s/files/1/0431/2131/1898/files/27554014642.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_off00006a46.bin` `eeb3aebe2a98e2a209820ddeb1d47ab8f751ce14ff54086eff331af594c4987c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A46	5376 bytes
`font_01_sfnt_off00007c9d.bin` `c6d9695e44de902ea1ab21dbc0b290b153d6a44bec7f7255e44576c107d92f6b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C9D	10288 bytes

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