PDF malware analysis — malicious · 9c47f7deecda00a8

MALICIOUS

PDF

41.8 KB Created: 2020-09-04 13:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1760333bd6a0bb7d3bc3f6092f523072 SHA-1: 4a301043b1405f49d9c0eac210b6d11118580799 SHA-256: 9c47f7deecda00a876ee3b0fd30001b04b27557a8006c23333bcb657ac64cb1f

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to static.usrfiles.com, which is part of a link farm. One prominent URL, https://ttraff.club/pify?keyword=basic+exponents+worksheets+pdf+6th+grade, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing educational worksheets.

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.club/pify?keyword=basic+exponents+worksheets+pdf+6th+grade
- https://static.usrfiles.com/ugd/8e1900_23cac6ab931e49aaac71dd28596ddee9.pdf
- https://static.usrfiles.com/ugd/2c8d66_7d7f6e97aac54b50bc4bf05d6ffef959.pdf
- https://static.usrfiles.com/ugd/3f80ec_7addef8a47ec40f6bbb38b67defa966a.pdf
- https://static.usrfiles.com/ugd/b0b521_8e885c3259e14b8bb0d64d7843850b2d.pdf
- https://static.usrfiles.com/ugd/23e9be_153816b126f040a08a7e9ce647a57fb5.pdf
- https://static.usrfiles.com/ugd/353d00_62240b0c46f8470c9c85ba0ad776df5c.pdf
- https://static.usrfiles.com/ugd/b8c837_404c24a989354ec29ef1d2ea9a374377.pdf
- https://cdn.shopify.com/s/files/1/0429/9443/4202/files/dragon_booster_game.pdf
- https://cdn.shopify.com/s/files/1/0436/9406/3770/files/kozajejisemumuneg.pdf
- https://cdn.shopify.com/s/files/1/0429/1503/7343/files/59622028645.pdf
- https://static.usrfiles.com/ugd/83b1b3_59018dbfa65244a6b725663c47ebed23.pdf
- https://static.usrfiles.com/ugd/bbd3cf_39690dc1980f4f079761b439bb2b8a2d.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_off00006503.bin` `60885cb0776b1915c7333f1d0aec066adca2eef45e5622b6c3439c72f95fae68`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6503	5812 bytes
`font_01_sfnt_off000078e5.bin` `f84adadf8b9ddc1c11a31fc6666ba5d5cdaa5871d6c2d260eb82b1a581de5945`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78E5	9864 bytes

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