PDF malware analysis — malicious · 3caefe8a63895e9c

MALICIOUS

PDF

59.7 KB Created: 2020-09-04 06:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e06adc41a9f991c0791d83837b41ede0 SHA-1: c40deb00383969e832fe089fcda302b7a0914a61 SHA-256: 3caefe8a63895e9c0e7f5c7a4c77c41eb1d6571e19bea52c894b9233e552320e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.me, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of this URL. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, which is flagged as a link farm. The ML classifier also strongly indicated maliciousness.

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=catholic+saints+movies
- https://static.usrfiles.com/ugd/5fd5c1_80136a1ddaae47788d6ce8bb1c4c0960.pdf
- https://static.usrfiles.com/ugd/f3ecbe_7d2eb51d7a064656afcb6c42d50e36b3.pdf
- https://static.usrfiles.com/ugd/b11f6d_a699436a75734cba9fa3812169336f1f.pdf
- https://static.usrfiles.com/ugd/b30cf0_721ce4aea62a47b7b7ca8fbaba389a02.pdf
- https://static.usrfiles.com/ugd/b8c837_c5457d31b2ec4059a31b98aa8781f0d3.pdf
- https://cdn.shopify.com/s/files/1/0430/6377/1293/files/bexolepobaxezus.pdf
- https://cdn.shopify.com/s/files/1/0435/7206/8520/files/86969912538.pdf
- https://static.usrfiles.com/ugd/865d50_786bea90b0ce49ceaf50ca7a33f3f40a.pdf
- https://static.usrfiles.com/ugd/e2c250_128910a356864dba8a82ee6873092cc2.pdf
- https://static.usrfiles.com/ugd/11b39a_8c3513896fb146f384aa0b1d708718cd.pdf
- https://static.usrfiles.com/ugd/f84671_a93fbe351efe4b7995a1c8d879dfc09f.pdf
- https://static.usrfiles.com/ugd/27135d_bbecd226cdf844de9530db26302c2403.pdf
- https://static.usrfiles.com/ugd/fd7405_090de918095342f78087751d5499728e.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_off0000adc8.bin` `63e6a4ed903db8a88c143847e54af23c41600aede98b2ced5009e2fa726fe15a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xADC8	4908 bytes
`font_01_sfnt_off0000be59.bin` `a40fe9bd837077981046b065906a09ae501d69fb0799dab4a32582fefe61d9e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBE59	10556 bytes

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