PDF malware analysis — malicious · b14694bb18728ba6

MALICIOUS

PDF

46.5 KB Created: 2020-08-30 02:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d96343eb1e8c917b9c6f5e20e85e9c75 SHA-1: 7c47eae052f210e4196327e34feb436e21e21850 SHA-256: b14694bb18728ba6f1262e095c42feb4de8bc81982b08cd241b99a2a079d9fe2

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document was flagged by a machine learning classifier and heuristics indicate it contains a malicious redirector link and a link farm. The primary malicious URL is https://ttraff.com/wix?keyword=reallifecam+nas%25C4%25B1l+izlenir, which is part of a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to static.usrfiles.com, suggesting a coordinated effort to distribute malicious content.

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.com/wix?keyword=reallifecam+nas%25C4%25B1l+izlenir
- https://static.usrfiles.com/ugd/b8c837_c90ac62fed6041a78dfd308155d0ebc0.pdf
- https://static.usrfiles.com/ugd/4bdc6d_9e28b260dbee4d7e94fbd72fd0503fa4.pdf
- https://static.usrfiles.com/ugd/b8c837_69835b07f3384104b37017660d06b508.pdf
- https://static.usrfiles.com/ugd/429b25_1cc922c9ad7f4c4983128a68bc82d811.pdf
- https://static.usrfiles.com/ugd/158fb9_b11a237aaa384d02a1e6df654179721e.pdf
- https://static.usrfiles.com/ugd/19103d_e28b99d032174b2fbbe9fa3b8b00dfe9.pdf
- https://static.usrfiles.com/ugd/5899d5_d49e0f14bf324b51873991306be6fb40.pdf
- https://static.usrfiles.com/ugd/b8c837_855f1828950c49308e396aa98137963a.pdf
- https://cdn.shopify.com/s/files/1/0440/5238/1846/files/16876110262.pdf
- https://cdn.shopify.com/s/files/1/0436/8351/2473/files/34070393221.pdf
- https://cdn.shopify.com/s/files/1/0429/8558/6841/files/stay_tuned_for_more_information.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_off00007508.bin` `aad222c7d8ee34a07f96d9da3528b09142f3987846b5ca801d07a1e309c48f3d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7508	5116 bytes
`font_01_sfnt_off00008661.bin` `dc7f848130769b4629fb987635d08adf78fe56c9393e291d19afe0c5569a6491`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8661	11912 bytes

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