PDF malware analysis — malicious · 71e7e0e617899783

MALICIOUS

PDF

35.1 KB Created: 2020-06-04 15:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6cc9baadc7c330fe9dd11383ea0caa48 SHA-1: ffb1ec78e9fefad9a9dc740519fa59362c91e3a3 SHA-256: 71e7e0e617899783707741f87babeab83e637e7182c06a4fdd8924ff58c22080

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to these URLs, suggesting a link farm or SEO poisoning attempt. The ML_NYX_PDF_MALICIOUS heuristic strongly indicates malicious intent, likely related to distributing further malicious content or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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 http://walshzubiate.com/uploads/1/3/0/6/130604230/130604230.html#titanik+filmi+t%25C3%25BCrk%25C3%25A7e+dublaj+full+izle
- http://jessicaazrin.com/uploads/1/3/1/4/131406879/5f9a847be872556.pdf
- http://mavenpoint.net/uploads/1/3/1/3/131383319/7749421.pdf
- http://casakiol.com/uploads/1/3/0/4/130493714/c40b5e.pdf
- http://latishatrinketcom.com/uploads/1/3/0/4/130476313/wavoda.pdf
- http://umokyeah.com/uploads/1/3/0/5/130588500/2531842.pdf
- http://zhomeinspections.net/uploads/1/3/0/6/130639123/1695997.pdf
- http://g-boutik.com/uploads/1/3/0/5/130590043/19a56417809d.pdf
- http://philippszydlowski.com/uploads/1/3/0/7/130775635/166a1c86.pdf
- http://walshzubiate.com/uploads/1/3/0/6/130604230/terms.html
- http://walshzubiate.com/uploads/1/3/0/6/130604230/dmca.html
- http://walshzubiate.com/uploads/1/3/0/6/130604230/policy.html
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://zivokot.files.wordpress.com/2020/06/farimidiravumefujenebigi.pdf
- https://vurofozemer.files.wordpress.com/2020/06/90760973012.pdf
- https://sosunilavef.files.wordpress.com/2020/06/80771697941.pdf
- https://xibelilunaf.files.wordpress.com/2020/06/wavomavekoranabupufil.pdf
- https://tujozoxi.files.wordpress.com/2020/06/guvifujil.pdf
- https://miwegakumu.files.wordpress.com/2020/06/46479730308.pdf
- https://jaxufuli.files.wordpress.com/2020/06/38205607658.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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000059a7.bin` `f2d4f1b890d41e892b0f86a5f166520168f7f3a3c0f7e3961c8ba6c2905d543d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59A7	12000 bytes

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