PDF malware analysis — malicious · de47b1791e1121f6

MALICIOUS

PDF

41.4 KB Created: 2020-08-29 22:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 699f1f5ed3fdc397a239dd97bb7c5dd3 SHA-1: a3357dd9b565174eaac08af2045c63fab9b64030 SHA-256: de47b1791e1121f6fcb42e15c9c1cdd5dbb4b36886ca7a38b60bf00d14f33074

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body is heavily obfuscated and appears to be junk data, but the presence of the malicious redirector URL and the link farm heuristic strongly suggest a malicious intent to redirect users to harmful content. The file also contains numerous links to static.usrfiles.com, which are likely part of an SEO link farm.

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.cc/wix?keyword=duplo+creative+cars
- https://static.usrfiles.com/ugd/b8c837_687d5e1acddd42a4a569c6aba716f1fb.pdf
- https://static.usrfiles.com/ugd/b8c837_7e39c992a4b74e0f9d33056ae11eda31.pdf
- https://static.usrfiles.com/ugd/b8c837_55bf3f6d318a4a059be0e1e5e90bd68c.pdf
- https://static.usrfiles.com/ugd/b8c837_66dc8210f9214acfbe9ec9d284a283d5.pdf
- https://static.usrfiles.com/ugd/b8c837_115ae9c193484922906247c9ee7ae7dc.pdf
- https://static.usrfiles.com/ugd/b8c837_efc6fe953ec6424396a962789aae88c5.pdf
- https://static.usrfiles.com/ugd/b98abb_d79e242c3f5a4db4a2d01d203a970ed8.pdf
- https://static.usrfiles.com/ugd/91e123_fc25cf3bdcfb4fc7beb70aef8b9e9f07.pdf
- https://static.usrfiles.com/ugd/b8c837_69d3b109494d42e6b98fac0e986cca57.pdf
- https://static.usrfiles.com/ugd/b8c837_5e552a6c1f93481cbe7628d07a5771c6.pdf
- https://static.usrfiles.com/ugd/b8c837_1dd34e1a38ad4bd3b22dbd4207583f8a.pdf
- https://static.usrfiles.com/ugd/b8c837_200f364c922e45bb91bc11556e7d4c61.pdf
- https://static.usrfiles.com/ugd/b8c837_de221f358af14cefb7bdd19a92485e94.pdf
- https://static.usrfiles.com/ugd/b8c837_349c252372984fe9b3410c02ef022d81.pdf
- https://static.usrfiles.com/ugd/b42fd6_9d207ae58092456085e8965e5d148859.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_off00005779.bin` `0ae9d4405021b94bd278a2ccb81c53deb0fee398bf1500974c5a1ac625da258c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5779	4984 bytes
`font_01_sfnt_off00006881.bin` `b46877593ad5830ed3cd46f6a870aff076c7ad076e24877c030d6352974f47ea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6881	15728 bytes

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