PDF malware analysis — malicious · 8c59d1226a1fca2d

MALICIOUS

PDF

47.0 KB Created: 2020-08-29 06:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 053d544caaf06a17c22aa3d47a85a3b7 SHA-1: 5bf27a0599b1cec3b0e81e8fa0a8dc5ca80ff42d SHA-256: 8c59d1226a1fca2dadd0db09a2a1e368bfd3d1fb8d86f5c53b5cf2240f9e141c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.cc. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, suggesting a spam or SEO poisoning campaign. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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=hello+after+goodbye+jim+brady
- https://static.usrfiles.com/ugd/b8c837_f5004c732a854fe490da7c63f88c82dd.pdf
- https://static.usrfiles.com/ugd/b8c837_be5457d0f07345329b450ef9715aedde.pdf
- https://static.usrfiles.com/ugd/b8c837_83f0769e4102485a8a3e32a7e1e7d435.pdf
- https://static.usrfiles.com/ugd/b8c837_608b274125884702a3938e1ac8db3600.pdf
- https://static.usrfiles.com/ugd/b8c837_5b0f340cbc6d40aa8891f4a2860b948b.pdf
- https://static.usrfiles.com/ugd/b8c837_c90b7b7f532a4c299ae43acb6a4c2dc1.pdf
- https://cdn.shopify.com/s/files/1/0436/3013/3408/files/82479953649.pdf
- https://cdn.shopify.com/s/files/1/0434/4417/5013/files/bawotab.pdf
- https://cdn.shopify.com/s/files/1/0434/6694/8773/files/uc_browser_mini_beta_apkpure.pdf
- https://cdn.shopify.com/s/files/1/0433/7152/8344/files/buxopixanid.pdf
- https://static.usrfiles.com/ugd/b8c837_eba7bf65c2c84f02a6739c84ebca9f86.pdf
- https://static.usrfiles.com/ugd/b8c837_6ca4e78d6af945fc8886cab44fc42ce9.pdf
- https://static.usrfiles.com/ugd/b8c837_a0d5665c94c84289bad72b7396d0bf35.pdf
- https://static.usrfiles.com/ugd/b8c837_d6709bc75bdb48f1aad4cab8ec6c77ee.pdf
- https://static.usrfiles.com/ugd/b8c837_4a7c8bbcd9bd4834aa70780b5158fb8d.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_off00006cbe.bin` `cd1d1ad8e8ef1ae3d4ecff50be0ea8d87b7ed9cfc3f8a8bd6b1d4bc926f2bcc9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CBE	5008 bytes
`font_01_sfnt_off00007dd8.bin` `d958780474e4d005df282387ac43e13f818f821104c81a4291a12f65ca1346c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DD8	10332 bytes
`font_02_sfnt_off0000a0f9.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA0F9	4324 bytes

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