PDF malware analysis — malicious · 7ed69201d0757711

MALICIOUS

PDF

55.8 KB Created: 2020-08-29 02:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f6d8ae9bd6afe575cf860ee8bede884c SHA-1: d8f98768d2b496626ff588d86932d84b9f954cf8 SHA-256: 7ed69201d075771118ac5eee89a1d78980459df35a2793b7ec40f39e45f05c32

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. One such redirector URL is explicitly identified as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content.

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.cc/wix?keyword=angora+rabbit+price
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/b8c837_0d8fbc47cf994df08f2ab03af395cb97.pdf
- https://static.usrfiles.com/ugd/b8c837_7ca1c2afb596450cbdb5b57d07161ad8.pdf
- https://static.usrfiles.com/ugd/b8c837_9b6b751c4290470db59cc9359cebf444.pdf
- https://static.usrfiles.com/ugd/b8c837_aa28568802844c82bf3acaf25de470f5.pdf
- https://static.usrfiles.com/ugd/b8c837_382c5c9a622a467fadc8dcbf70f289d4.pdf
- https://static.usrfiles.com/ugd/b8c837_9ecf4f1b885f4d6d99c7b1653b0db2a4.pdf
- https://static.usrfiles.com/ugd/b8c837_f332d745aa2b48bc8a08515fda18557a.pdf
- https://static.usrfiles.com/ugd/b8c837_1afed4af97774fb89ac2cd30adfd8427.pdf
- https://static.usrfiles.com/ugd/b8c837_3eac225cf6a944daa0d7b574701ecceb.pdf
- https://static.usrfiles.com/ugd/b8c837_522641019a894c168b977696308f1137.pdf
- https://static.usrfiles.com/ugd/b8c837_c9a7309440d34a43b97f78d24b04cdf5.pdf
- https://static.usrfiles.com/ugd/b8c837_3c718861d0aa42f28b8f31c7e3617d2f.pdf
- https://static.usrfiles.com/ugd/b8c837_9d237b1638054691bbfc12eece92e935.pdf
- https://static.usrfiles.com/ugd/b8c837_8ef3bf5d474648d9874d6aa759b6362b.pdf
- https://static.usrfiles.com/ugd/b8c837_e4b728b8f34e4bc4b63c6ee87bb3e84a.pdf
- https://static.usrfiles.com/ugd/b8c837_fdfa90182a5d4bc28e25f13ed5d7ec77.pdf
- https://static.usrfiles.com/ugd/b8c837_5e7d034b28b7452ca751a6a9e9c3f1e1.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/
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00009039.bin` `8c34f00157c47489ff93a3373399b63528db003be010138bb79afa9f0967aafc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9039	4808 bytes
`font_01_sfnt_off0000a08e.bin` `cd50b4a491c1d8c6e1dd7054b773a86ee9979647e6213143671fbceadf071c7c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA08E	10376 bytes
`font_02_sfnt_off0000c3c3.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC3C3	4324 bytes

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