PDF malware analysis — malicious · 5d0379154d26f92a

MALICIOUS

PDF

50.8 KB Created: 2020-08-31 22:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b770a7bb4e1b5579caa111e4a453964 SHA-1: bb3429171561791d3197809ef5d3de5910651129 SHA-256: 5d0379154d26f92a7e6005ae0ebff08304bb489e606df7516aca79a9019fa774

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a redirector to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a movie, suggesting a phishing or content-luring attack. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to 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/pify?keyword=minority+report+movie+free++in+tamil
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_942c5375e538440f8284ddcaf11f1afd.pdf
- https://static.usrfiles.com/ugd/b8c837_ceddf993e4b54ec79a7a96f85822c09f.pdf
- https://static.usrfiles.com/ugd/38eac1_5c17bc6727ee4771b092961c14dd47ed.pdf
- https://static.usrfiles.com/ugd/e2f197_7137577bba744b1fb052ac116b15c90b.pdf
- https://static.usrfiles.com/ugd/575363_420d13fb07a84fd2a9dce7b851387395.pdf
- https://static.usrfiles.com/ugd/b8c837_62ead4b5d7db4e8381977a53c9133e96.pdf
- https://static.usrfiles.com/ugd/6924eb_565c28d70f33466499b428faa5b38535.pdf
- https://static.usrfiles.com/ugd/c1de29_d8a97471395f4c6ab64cd2e16fe2960a.pdf
- https://static.usrfiles.com/ugd/b8c837_cd1db809a18e444b985757bc68cd7cfc.pdf
- https://cdn.shopify.com/s/files/1/0435/8209/5519/files/bedidanuteliganapimelam.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73807437975.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_off0000898c.bin` `afca46d7c29e7cafadbbafbc6ed093d3873c1e76d82b038627d84dcc5830ef9e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x898C	5036 bytes
`font_01_sfnt_off00009ab4.bin` `17caa2f774f2813b99fbe457b4d232e0df6c6b1a237bc44fc408b21e1a143842`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AB4	10352 bytes

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