PDF malware analysis — malicious · 393db4878a5076ee

MALICIOUS

PDF

105.1 KB Created: 2020-08-29 23:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cd02be3abbb161917dfd51ca841f760a SHA-1: 43722e787861e9a37c11f53799c018eb2ae2ca16 SHA-256: 393db4878a5076eeb868e872389055034d46c08e431f7618f09af58ddd40bed0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a deceptive document body that appears to offer Tamil songs for download, but it embeds a link to a known malicious redirector. The primary heuristic indicates that the PDF links to malicious redirector infrastructure, and the ML classifier also flagged it as malicious. The embedded URL is reconstructed as 'https://ttraff.cc/wix?keyword=tamil+gramiya+padalgal+mp3+songs+download', which is a key indicator of the malicious intent to redirect users to harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9643

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=tamil+gramiya+padalgal+mp3+songs+download
- https://static.usrfiles.com/ugd/b8c837_ca6aca370f124b1b9c1597a557f422a9.pdf
- https://static.usrfiles.com/ugd/c83fdb_f14faee41fce422da6f07aa8f34672a7.pdf
- https://static.usrfiles.com/ugd/5ecadc_e64daf29f8a84c2aa7899cd347d05472.pdf
- https://static.usrfiles.com/ugd/b8c837_9b379de2e3ad4784b77d7e57621d9fbe.pdf
- https://static.usrfiles.com/ugd/b8c837_d7b4058e02c947d09a2cf0f90eecc184.pdf
- https://cdn.shopify.com/s/files/1/0429/5832/3865/files/63166702557.pdf
- https://static.usrfiles.com/ugd/b8c837_0498c0ee08044bf8bb70d73c57a1bc4a.pdf
- https://static.usrfiles.com/ugd/b8c837_0c7eb0dc492943a39f168da2486f3df8.pdf
- https://static.usrfiles.com/ugd/b8c837_aa232c00dec347458a860aaa1b17f07f.pdf
- https://static.usrfiles.com/ugd/b8c837_c6ad5c6885594950ac3b8735acf93018.pdf
- https://static.usrfiles.com/ugd/4dd980_a72cd686e7374e29bb0861a5dfcf6c0d.pdf
- https://static.usrfiles.com/ugd/b8c837_e75a61ade84b4443b4883b0f28c711f6.pdf
- https://static.usrfiles.com/ugd/10e3af_b224fe233c4340efb39c05cacf56a977.pdf
- https://static.usrfiles.com/ugd/b8c837_0a5455990fbc465ba8584713ff21f099.pdf
- https://static.usrfiles.com/ugd/b8c837_80c7413a27dc4850b3e9b38e144f2605.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000163a3.bin` `f8b5e23e1007d01316b4c6b1fbb6dce997834b5ec555d94f2895a853d5438719`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x163A3	5584 bytes
`font_01_sfnt_off0001769d.bin` `e5cf4177c27d71497deb063d21461da91e2d076f9787985a419f49199200b00f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1769D	13356 bytes

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