PDF malware analysis — malicious · 68e8766921bdbf7e

MALICIOUS

PDF

39.8 KB Created: 2020-09-01 17:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01a3710752faed3208dc360a81cd6a7d SHA-1: f0764235bf1931db9cee44ca7338a1ba7b0c23b7 SHA-256: 68e8766921bdbf7e153b9eaa01a25fb607c30d1053d40596c9e5fa882184c922

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to movie titles and a URL that appears to be part of a link farm designed to attract traffic. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

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.ru/wix?keyword=kaalakaandi+movie++foumovies
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/fe83c3_9762266c56674f7f86c81b17611b2e71.pdf
- https://static.usrfiles.com/ugd/d79848_d6debd8d8e4643c2b47c43395b6c6466.pdf
- https://static.usrfiles.com/ugd/b8c837_5689eced90bd429ca9020d6800e11d52.pdf
- https://static.usrfiles.com/ugd/ae059d_346937170a0441a1a4f4bd1903fe8328.pdf
- https://static.usrfiles.com/ugd/5b9a87_adb5b4edb174409a8f16e11018ea90e9.pdf
- https://static.usrfiles.com/ugd/b8c837_2c11272175974cbb830bac88bda7f0e5.pdf
- https://cdn.shopify.com/s/files/1/0464/6528/6302/files/extension_chromecast_pour_chrome_android.pdf
- https://cdn.shopify.com/s/files/1/0428/4393/0791/files/83244399197.pdf
- https://cdn.shopify.com/s/files/1/0434/5636/4711/files/sezogelekanepugebon.pdf
- https://cdn.shopify.com/s/files/1/0432/4923/8184/files/rafuvobapifezigof.pdf
- https://cdn.shopify.com/s/files/1/0431/0751/6565/files/19182104381.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005f01.bin` `b1c7cbe81a235d514e5ca7e774e453ced5314fa9fc8b14e89b418e14b37dacb7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F01	5052 bytes
`font_01_sfnt_off0000702b.bin` `40dec45e6cd51dce9d547dda3bba19af28158d0e40eba809e4f7bf67151e0a1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x702B	10120 bytes

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