PDF malware analysis — malicious · f85c23fd470b7a8c

MALICIOUS

PDF

50.1 KB Created: 2020-08-30 01:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2132a4af12a734588a48b606f08f83d SHA-1: 238403dbf4734d34cdd4adee0305d7d509fdd41b SHA-256: f85c23fd470b7a8c66231c699c8b61ff5dde9499ee221b5d620d65cf931bba17

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one heuristic specifically identifying a malicious redirector link to 'ttraff.com'. Another heuristic indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The ML classifier also flagged this PDF as malicious. The presence of these links points to an attempt to redirect the user to malicious sites, likely for phishing or malware delivery.

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.com/wix?keyword=mesures+de+masses+cm1
- https://static.usrfiles.com/ugd/8d57bd_7567ee9b6083442d902acac9b3ec396f.pdf
- https://static.usrfiles.com/ugd/b8c837_9171afc45e8b4b4cacd8a07933505dd2.pdf
- https://static.usrfiles.com/ugd/89064d_c0e9970f19dc47f98ac1389a8b3efe18.pdf
- https://static.usrfiles.com/ugd/c3f88d_83f329941b2648ba944394d3f2529148.pdf
- https://static.usrfiles.com/ugd/b8c837_03bfdca873484d72bd1a03bb24b2f9a6.pdf
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/lizasuj.pdf
- https://cdn.shopify.com/s/files/1/0431/1387/3569/files/66607304364.pdf
- https://cdn.shopify.com/s/files/1/0431/2875/0241/files/93127242006.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83300066175.pdf
- https://static.usrfiles.com/ugd/b8c837_cbc3ed3688bd4e81b20d5ed8562a561f.pdf
- https://static.usrfiles.com/ugd/55cc32_7e635bd0298e422ba8dd1320811bd088.pdf
- https://static.usrfiles.com/ugd/1f2646_d1a150619c3c4935be8abc7b4b3f4f95.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/
- https://static.usrfiles.com/ugd/1f2646_d1a150619c3c4935

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006295.bin` `e9cc600fec66d294f44dc2caec0469d259132be4df66ffba9ed71671ddf5648c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6295	5108 bytes
`font_01_sfnt_off000073e0.bin` `a3217486c1661ff4b42f9aca4fa3ee8d5726a8916bad28ba2badfb1fb8959d0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73E0	15668 bytes
`font_02_sfnt_off0000a3bb.bin` `4954ddec54c61b6acc7eddbac306bc890d05f3afdfcf3ae890c7612da0a7d668`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA3BB	16376 bytes

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