PDF malware analysis — malicious · 24d0bf27c903bd24

MALICIOUS

PDF

42.9 KB Created: 2020-08-29 17:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ec554ced9ebcb6dc208c69858582c016 SHA-1: 14d95a597115a763c8a574732eebd835be5412a0 SHA-256: 24d0bf27c903bd24bac80dd5d4a6b546ce4bcef51e0b774431351073d42ca005

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The embedded URL 'https://ttraff.com/wix?keyword=enchanted+forest+colouring+pages+to' is a primary indicator of malicious intent. The document also contains numerous links to PDFs hosted on 'static.usrfiles.com', which are part of a link farm. The ML classifier strongly supports the malicious verdict.

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=enchanted+forest+colouring+pages+to
- https://static.usrfiles.com/ugd/b8c837_1ea06ee8763242819b6ad57a77c297b8.pdf
- https://static.usrfiles.com/ugd/93c935_3e7b40c29b464cb888d7f0c71d2cb4b4.pdf
- https://static.usrfiles.com/ugd/b8c837_00dd6d23b30d4a7fa91d0b87e0244c30.pdf
- https://static.usrfiles.com/ugd/20d83a_f8cf841a4907442b95aed4a8f705e178.pdf
- https://static.usrfiles.com/ugd/b8c837_30ca9d38d8474d549094ef80b5c05124.pdf
- https://static.usrfiles.com/ugd/89c6ad_4c44377feb1e45f1b1e65d1c76751baa.pdf
- https://static.usrfiles.com/ugd/b8c837_a2069fcc385d483c8417b5d2b6ac7d3a.pdf
- https://static.usrfiles.com/ugd/b8c837_b37697bb65754d0db43e541555f19d9b.pdf
- https://static.usrfiles.com/ugd/b8c837_889bbe83afd54d46bbfef5d9a3a0254c.pdf
- https://static.usrfiles.com/ugd/b8c837_b72dee6326534a7fa73e2601425d7c25.pdf
- https://cdn.shopify.com/s/files/1/0434/0213/3653/files/nozarolenoga.pdf
- https://cdn.shopify.com/s/files/1/0429/5308/0985/files/siguwawinugiwopefo.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000695a.bin` `d3d5183dab560cdbc8edcc8821bd8cb2c7f9fcbac5138bba09bd48ee809cd97a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x695A	5376 bytes
`font_01_sfnt_off00007b96.bin` `9c14075a194462f791bd9a92c6ecce1c059f845b5d86295c12cc38c03206e7f4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B96	10360 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.