PDF malware analysis — malicious · 2967b79a3093c839

MALICIOUS

PDF

36.3 KB Created: 2020-09-04 07:34:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 996e05130520d545ed2f1d3cd044a80b SHA-1: 9bb92af06829872f786324469100c31d1b18a273 SHA-256: 2967b79a3093c839c5b490fda1e60b9e4c34e21ddd49f8870a0375afa7ae5118

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 external PDF files hosted on static.usrfiles.com. One critical heuristic identified a malicious redirector link (https://ttraff.me/pify?keyword=borrowed+time+by+cueshe) which is likely the primary malicious payload delivery mechanism. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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.me/pify?keyword=borrowed+time+by+cueshe
- https://static.usrfiles.com/ugd/81b904_8290d4e0d94e47eb9640ad111c72aea4.pdf
- https://static.usrfiles.com/ugd/90423f_8a28dda15b73473ab8a27e8fb5c2aca8.pdf
- https://static.usrfiles.com/ugd/23924c_3f8e7dfcde4f46ffb96fa20f647b0b9b.pdf
- https://static.usrfiles.com/ugd/23b571_09837046477b42b78693ed32010cb5d3.pdf
- https://static.usrfiles.com/ugd/b85eb0_6846ace9449b406980168bb7d5324f28.pdf
- https://cdn.shopify.com/s/files/1/0464/0948/2408/files/dagutadudilusukufi.pdf
- https://cdn.shopify.com/s/files/1/0469/9232/6808/files/17944608237.pdf
- https://cdn.shopify.com/s/files/1/0438/1750/0834/files/piping_isometric_drawing_guide.pdf
- https://cdn.shopify.com/s/files/1/0434/8755/9833/files/65569676012.pdf
- https://cdn.shopify.com/s/files/1/0438/3421/2509/files/59171663758.pdf
- https://cdn.shopify.com/s/files/1/0428/2269/7126/files/gidozuroneduf.pdf
- https://static.usrfiles.com/ugd/a474dd_078035a7e5c04c1cb468e53560043fdf.pdf
- https://static.usrfiles.com/ugd/98e298_cfdc0a0466064b4b80c91e8fe78e49f5.pdf
- https://static.usrfiles.com/ugd/b8c837_fd7089a5519a467f9f8b13107eb7b74e.pdf
- https://static.usrfiles.com/ugd/4dd980_7a3b13934c9444e6960e9553c901bcb5.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_off0000457c.bin` `8e383b2748ca8f9b2326032dc1ee3527ffa486c0b99a2f36d3c37414a464e5a1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x457C	5096 bytes
`font_01_sfnt_off000056e8.bin` `a3a6340692ac67482946e911afa771b94473b81ecfb74258502cd1496be76944`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56E8	9276 bytes
`font_02_sfnt_off000076ab.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76AB	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.