PDF malware analysis — malicious · 51666e7cb18babe1

MALICIOUS

PDF

47.6 KB Created: 2020-07-08 13:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a66e5995e7cdc5e07362eca215be0dcb SHA-1: 746407e379384d8f1df38a5fac6185659f5b6303 SHA-256: 51666e7cb18babe1ea6611e5af4bbc8420c1c471173e458d00ef579cbc932745

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links to external websites, many of which are part of a link farm designed to host malicious content. One prominent URL, "https://ttraff.ru/wb?keyword=moto%20x4%20manual%20network%20selection", is identified as a malicious redirector. The document body, though partially obfuscated, also contains this URL and appears to be a lure related to a "Moto x4 manual". The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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/wb?keyword=moto%20x4%20manual%20network%20selection
- http://files.mitemplosagrado.com/uploads/1/3/1/3/131383255/1a29a9be209c6c6.pdf
- http://files.ishan-yu.com/uploads/1/3/2/8/132815752/4666919.pdf
- http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.pdf
- http://files.suisvisualarts.com/uploads/1/3/1/3/131383510/1253636.pdf
- http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdf
- http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdf
- http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdf
- https://gedukajira.files.wordpress.com/2020/06/35839777063.pdf
- https://vupejesos.files.wordpress.com/2020/06/valunibojupakifug.pdf
- https://pexiweki.files.wordpress.com/2020/06/83306524923.pdf
- https://vugerudima.files.wordpress.com/2020/06/86632286407.pdf
- https://zitexop.files.wordpress.com/2020/07/jatejufinixuzofemadu.pdf
- https://lazevozazu.files.wordpress.com/2020/07/xeruwuwuwez.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000055a8.bin` `3719afff0b263a775802fe633cf4a7e0377b530328a22878186afdbeb9ad6421`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55A8	4644 bytes
`font_01_sfnt_off000065eb.bin` `ccc4932254dd3d996b4fa897e1dca44ab4c642c3fe1fa88df923f95cd70bb138`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65EB	5144 bytes
`font_02_sfnt_off0000776b.bin` `34fc452c851362f2cbac61fbe0472b80a4b3516e41cb94d592a68e750f15d935`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x776B	9560 bytes
`font_03_sfnt_off00009866.bin` `ab52cd6058e2387e28f9e08a9bfb9d9562fc63bb839c0e172710fef602dfda09`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9866	17028 bytes

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