PDF malware analysis — malicious · 964c69f943261ecc

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 23:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9efe4d4b0d84de51b05fb768b8cc9e3d SHA-1: 597e4df879367e50e6586b31454466219ebf396a SHA-256: 964c69f943261eccd1f8a6da5c8749da826a182abc89b053cf45b224faa5c218

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple links, one of which points to known malicious redirector infrastructure (ttraff.ru). The ML classifier also strongly flagged this PDF as malicious. The document body contains what appears to be obfuscated text and URLs, suggesting an attempt to disguise malicious content. The primary attack pattern involves redirecting users to potentially malicious sites, likely for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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 JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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=bodybuilding+hd+wallpapers+1920x1080
- http://medixad.artsxtra.com/uploads/1/3/2/7/132712323/8032583.pdf
- http://files.elcohsband.org/uploads/1/3/0/8/130814052/nifam.pdf
- http://files.mcbridetrails.ca/uploads/1/3/0/7/130738917/10b365e317f.pdf
- http://files.ausablebrewing.com/uploads/1/3/2/3/132303322/natolukatasux_xenunume.pdf
- http://files.covenantbiblecamp.org/uploads/1/3/1/3/131379980/5d5bb5.pdf
- https://cdn.shopify.com/s/files/1/0439/2583/1835/files/47719438408.pdf
- https://cdn.shopify.com/s/files/1/0439/3641/5899/files/b._d_singh_book.pdf
- https://cdn.shopify.com/s/files/1/0435/5719/1843/files/45289518014.pdf
- https://cdn.shopify.com/s/files/1/0441/3957/7496/files/breaking_bad_torrent.pdf
- https://cdn.shopify.com/s/files/1/0434/1825/5510/files/naruto_online_cave_key.pdf
- https://cdn.shopify.com/s/files/1/0428/6893/2767/files/pewumezenidijeboxul.pdf
- https://cdn.shopify.com/s/files/1/0433/0684/4315/files/32004193328.pdf
- https://cdn.shopify.com/s/files/1/0434/0154/3831/files/37088046663.pdf
- https://cdn.shopify.com/s/files/1/0433/2149/1621/files/malaysian_anti_corruption_act_2020.pdf
- https://cdn.shopify.com/s/files/1/0432/1096/5147/files/mafujavewuvusinupenage.pdf
- https://cdn.shopify.com/s/files/1/0435/4031/6319/files/wamurumuw.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_off00004f3e.bin` `da51bba4d1c974c5424dccd0e6a9a2bafe77838d81006b70f5da665a858fe47a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F3E	6348 bytes
`font_01_sfnt_off000064da.bin` `fdf722eb51d3ff70bc261d8668519a0489ab1871ffd243e62a4345d92f3c38cf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64DA	9540 bytes

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