PDF malware analysis — malicious · f30952a3bdd5868e

MALICIOUS

PDF

41.4 KB Created: 2020-09-20 03:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 00126cae3364c9429da1b1ec6bebdf77 SHA-1: 17ec728455ba577f7332e3173a83a83ccc35a571 SHA-256: f30952a3bdd5868ee8eff0ecce9b73505da1d24c0b35544e222bdce4271dd451

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm. One of these links, https://ttraff.me/wix?keyword=ffxiv+crayfish+ball, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the malicious URL.

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.me/wix?keyword=ffxiv+crayfish+ball
- http://jetolo.flatspokecycles.com/uploads/1/3/1/4/131405927/fae9e66130b2c.pdf
- http://files.pearlblossommakeup.com/uploads/1/3/1/3/131380745/9714310.pdf
- https://cdn.shopify.com/s/files/1/0437/6903/6958/files/32492192872.pdf
- https://cdn.shopify.com/s/files/1/0429/6874/4087/files/32151869602.pdf
- https://cdn.shopify.com/s/files/1/0437/2040/9256/files/56990479580.pdf
- https://cdn.shopify.com/s/files/1/0431/3530/3831/files/2538047663.pdf
- https://cdd9068f-a973-47e6-8c80-caad32f64286.filesusr.com/ugd/bc79a4_e3d27824fc874985a859da4e2caa3055.pdf?index=true
- https://170b3cae-e53f-44a0-9847-c9322fbfaf89.filesusr.com/ugd/efc97f_09b2000981a94f73883b8a917c61ed02.pdf?index=true
- https://9db03c11-6dcf-48e0-bce6-8b3e3824aa11.filesusr.com/ugd/3d7af5_2df7fe4c7f144097b4a8ee85997f9316.pdf?index=true
- https://be9288cc-1f33-4d4d-b9b2-01602c2f1ef8.filesusr.com/ugd/24deb6_325849b2c04d4f1594b9d84919106210.pdf?index=true
- https://cdn.shopify.com/s/files/1/0434/1740/3559/files/hillsong_worship_songs_mix.pdf
- https://cdn.shopify.com/s/files/1/0457/7122/7302/files/event_profile_template.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000042f5.bin` `78bfb3bbeb80f2f088f7325b082607ffd8f254f79d53e570c017f58ad7f084e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x42F5	4668 bytes
`font_01_sfnt_off000052e1.bin` `be26fd5e6082732117d5bf500c632e80e7ad4954ea7688db9627aaf704af271b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52E1	10136 bytes
`font_02_sfnt_off000075c1.bin` `2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75C1	16092 bytes
`font_03_sfnt_off00008a87.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A87	4324 bytes

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