PDF malware analysis — malicious · d6ac9a8cca9ed567

MALICIOUS

PDF

44.3 KB Created: 2020-11-01 11:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: be7fa3c7accc8f6c0d0f26a757cef247 SHA-1: 321e24a42759b19f7c11772f54d428791dfceaee SHA-256: d6ac9a8cca9ed567efcdea6c6865dea3651117935a02a5cfb2caf3a6bb006626

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link that points to a URL designed to lure users with a search query. The ML classifier strongly indicated maliciousness, and the document body, though heavily obfuscated, contains the same malicious URL. No scripts were extracted, but the presence of a malicious URL in a PDF is a strong indicator of a phishing or redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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://gettraff.ru/strik?keyword=nba+2k20+soundtrack+spotify In PDF document text
- https://cdn-cms.f-static.net/uploads/4379606/normal_5f8ef8240bc09.pdfIn PDF document text
- https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/rijokonanitoxi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380859/normal_5f8d7afadab55.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447915/normal_5f9e781ebbe34.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/vapelurowar/fried_banana_peppers_with_flour.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/0840/7703/files/flashlight_torch_android_studio.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/critical_control_point_adalah.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/9434/2301/files/39420103478.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/3378/6016/files/segedekevoxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/0990/0183/files/71235800430.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006bb6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BB6	5668 bytes
SHA-256: `487c0f9f22a077724b1cc1a3eba5904c03a58b270bfc59d743b366205a58aa49`
`font_01_sfnt_off00007f1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F1F	10940 bytes
SHA-256: `d85c5dedf73f5fe5660cfcf00bfceb5f0438ac000c6712afac04c22fde9cf1ab`

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