PDF malware analysis — malicious · fd42e0947559a82a

MALICIOUS

PDF

40.9 KB Created: 2020-08-29 05:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be31a1b3f1b7f5b9cdf2d593b6ee1b79 SHA-1: c9f7be77757e5ead62fc317aeee7b4779292517d SHA-256: fd42e0947559a82ac95c90acc71cc7ad9dc4f2ff7db15450287d0b9de773bd60

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious URL, disguised with a keyword related to 'Diablo 3 torment guide'. This indicates a social engineering attempt to trick users into visiting a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources, many of which are hosted on static.usrfiles.com. 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.cc/wix?keyword=diablo+3+torment+guide
- https://static.usrfiles.com/ugd/b8c837_1239dc3b41c64075bf518c58abdd1436.pdf
- https://static.usrfiles.com/ugd/b8c837_2e4e9d4e11fb4c6595592d5dabff8ae7.pdf
- https://static.usrfiles.com/ugd/b8c837_e32925c4c4944104ad021826a9565fad.pdf
- https://static.usrfiles.com/ugd/b8c837_66ffbac10baa43a1afe90f3009dc55b7.pdf
- https://static.usrfiles.com/ugd/b8c837_29ffe30b108647d0a3a8c20d0ba16e14.pdf
- https://static.usrfiles.com/ugd/b8c837_424092784b1441f19ed5e9047d8dc79f.pdf
- https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.pdf
- https://static.usrfiles.com/ugd/b8c837_edaa6cb7a74a450c919441e89df33d72.pdf
- https://static.usrfiles.com/ugd/b8c837_7a358fb89f1247f5a438c548b1d676f9.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5688/files/17775020499.pdf
- https://cdn.shopify.com/s/files/1/0432/7414/1864/files/1st_to_die_james_patterson.pdf
- https://cdn.shopify.com/s/files/1/0433/4629/6985/files/66772602070.pdf
- https://cdn.shopify.com/s/files/1/0431/6561/4234/files/94532679816.pdf
- https://cdn.shopify.com/s/files/1/0465/4383/1198/files/lapopetuvuna.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_off00006243.bin` `bebdd7f97d16275aa67707b6e2832dc42ff929fbea76f955543e4544256c87c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6243	5272 bytes
`font_01_sfnt_off00007407.bin` `fb5324b05228618b6203e6260cdfeea66edfcdc871ada16b4c3a124f6ee2fc47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7407	10280 bytes

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