PDF malware analysis — malicious · 223c60dc698f1ca7

MALICIOUS

PDF

48.8 KB Created: 2020-11-08 05:32:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 980fc2188978c5d4f102b035959b085e SHA-1: d0465544bb72590ca61e1867d653354267cf02b8 SHA-256: 223c60dc698f1ca704c2b2c7935128176d7e4c685d89fd3cb874fd63dba319e8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports this. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://trafffe.ru/123?keyword=7th+grade+science+cells+worksheets
- https://cdn-cms.f-static.net/uploads/4385014/normal_5fa492690fe59.pdf
- https://numuzobiw.weebly.com/uploads/1/3/4/5/134589566/kowupavilavepodib.pdf
- https://cdn-cms.f-static.net/uploads/4378170/normal_5fa0b2e9e82d3.pdf
- https://cdn-cms.f-static.net/uploads/4369307/normal_5fa5aec779100.pdf
- https://cdn-cms.f-static.net/uploads/4366987/normal_5f887c05b438c.pdf
- https://cdn-cms.f-static.net/uploads/4365660/normal_5f8733169b53c.pdf
- https://cdn-cms.f-static.net/uploads/4423715/normal_5f9f9f12e906d.pdf
- https://cdn-cms.f-static.net/uploads/4422890/normal_5f9782a8966d7.pdf
- https://jivoxafur.weebly.com/uploads/1/3/4/3/134382284/8f6c4e.pdf
- https://cdn-cms.f-static.net/uploads/4427528/normal_5fa6259357718.pdf
- https://cdn-cms.f-static.net/uploads/4418013/normal_5fa6278e607e3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://fevuxiwop.files.wordpress.com/2020/11/76253438202.pdf
- https://uploads.strikinglycdn.com/files/2f1801f2-7ee5-417c-b1f3-739f45a75d35/41593240124.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/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000066c4.bin` `d703b9bf0db0e3a5524d0d7cad7795124677f6df6626c7b597638c13326ad183`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C4	5344 bytes
`font_01_sfnt_off00007900.bin` `ceb2b502157b427108c7eb9253bd02e89b91317028698d1b87c36b6ac0775b0c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7900	11640 bytes
`font_02_sfnt_off0000a0c8.bin` `3a7b40eebbb8e8fe40cd1addd3fb70c121ed46201fca5d1a4c2b6a8dc59bea16`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA0C8	16172 bytes

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