PDF malware analysis — malicious · bb4ecddbf20fe610

MALICIOUS

PDF

53.9 KB Created: 2020-09-03 10:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fbf4da7e184d9d95c100ab60ddc1a892 SHA-1: de529508309a0392038a7ccd5ea1ac69debd8537 SHA-256: bb4ecddbf20fe610b24d7c6feac79e84321c367c6f1b6486f2d3c1aebfa96394

152 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.link, disguised as a game training guide. This suggests the document is part of a phishing or social engineering campaign designed to lead users to malicious content. The presence of numerous other PDF links, many hosted on static.usrfiles.com, indicates a link farm used for SEO poisoning or to obscure the final malicious destination.

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.link/wix?keyword=maplestory+reboot+training+guide+ark
- https://static.usrfiles.com/ugd/01d500_58ff6a54613944f98caf515cdc0e39c7.pdf
- https://static.usrfiles.com/ugd/b8c837_888e89948d9342229ae989069cec562d.pdf
- https://static.usrfiles.com/ugd/9b7d8a_470ee104897e48ee8e5d07e2e4278c7e.pdf
- https://static.usrfiles.com/ugd/defd8a_ffab1179cec944cfaa9676b1a4e393b9.pdf
- https://cdn.shopify.com/s/files/1/0430/8225/2442/files/54501152175.pdf
- https://cdn.shopify.com/s/files/1/0428/5107/4214/files/76467134504.pdf
- https://cdn.shopify.com/s/files/1/0437/5861/6733/files/nebilewatoderotusuwoju.pdf
- https://cdn.shopify.com/s/files/1/0430/0839/3369/files/davuretita.pdf
- https://static.usrfiles.com/ugd/003b86_ece3a384c96b48d4be74b44fa15b5e06.pdf
- https://static.usrfiles.com/ugd/cb4a18_b308269657b240ed81d8179e27aa54d6.pdf
- https://static.usrfiles.com/ugd/b8c837_97475afa840e4ea294ac917e8e89c985.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_off000078f5.bin` `1f9b9e5044531a53cb795e7346882f1ea63b833b3f9571c9424a3b8100a419aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78F5	5320 bytes
`font_01_sfnt_off00008b1c.bin` `16063fdc2cbc4841ff5eabde05b909113dff853a10b585d3499ae53f0d4408d3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B1C	16108 bytes
`font_02_sfnt_off0000bcb9.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBCB9	4324 bytes

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