PDF malware analysis — malicious · 1d03e25848387ae4

MALICIOUS

PDF

48.6 KB Created: 2020-08-30 02:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1922e54417cff0d1724baf595cf70a17 SHA-1: 82d085c3c4fa73387aae64320e5b2a0c985f29dc SHA-256: 1d03e25848387ae41d3f763c28c4e3e57327403aa08b1b1c5456b45a0e007267

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was identified as malicious by an ML classifier and contains a link farm of 20 external PDF links. One of these links, 'https://ttraff.com/wix?keyword=s%25C3%25A9quence+g%25C3%25A9ographie+cycle+3', points to a known malicious redirector. The document body is heavily obfuscated and appears to be non-readable text, suggesting it is not intended for direct user consumption but rather to host links.

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.com/wix?keyword=s%25C3%25A9quence+g%25C3%25A9ographie+cycle+3
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/48861151507.pdf
- https://cdn.shopify.com/s/files/1/0432/7663/2220/files/63063245681.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
- https://static.usrfiles.com/ugd/b8c837_80cac8eeca774c5aaaac7f0051ac1ef8.pdf
- https://static.usrfiles.com/ugd/55cc32_17d7c5dbacca4e73ab482219b5af3a93.pdf
- https://cdn.shopify.com/s/files/1/0465/3308/3294/files/66815840583.pdf
- https://cdn.shopify.com/s/files/1/0432/3350/9535/files/69931279312.pdf
- https://static.usrfiles.com/ugd/353d00_dafe8f2c2c874a18a24eab923604967c.pdf
- https://static.usrfiles.com/ugd/dad90e_70a7ffd629ff46cba93939c0869d5dc1.pdf
- https://static.usrfiles.com/ugd/9cb927_d5649b9e85e94680a21b5f7eb0572abe.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006513.bin` `a8201a270f022c748bb005190307a11a9d022045c1ffa25dd78d1dce18ca8b5f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6513	5652 bytes
`font_01_sfnt_off00007806.bin` `a09cb20f8c77ce855b09c7decb7dd0ff3cfe7def770442ed4463e10088011bca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7806	11764 bytes
`font_02_sfnt_off00009dce.bin` `68514bb0cca7d55c4f732e4cc36c87ee824def812b89237e20aafd43afe24de1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9DCE	16296 bytes

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