PDF malware analysis — malicious · 216604cde93a052f

MALICIOUS

PDF

38.3 KB Created: 2020-11-01 23:28:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: e1e7506bcef9254b8570949dcd54315a SHA-1: cadbb871db57e761d9656778146d7aa3d0db8584 SHA-256: 216604cde93a052fd996e07e3b41bbbf2c49bad794b56c356743866773216295

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.link/123?keyword=avidemux+64-bit+manual', is the primary indicator of malicious intent. While no scripts were extracted, the ML classifier strongly flagged this PDF as malicious, suggesting it's designed to lure users to a harmful site.

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://ttraff.link/123?keyword=avidemux+64-bit+manual In PDF document text
- https://cdn-cms.f-static.net/uploads/4384026/normal_5f8fd114119f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378393/normal_5f8a9da559127.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/4432/8856/files/10510573111.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dbf7366c-5a51-4079-a88b-5d48463cf34c/201334411.pdfIn PDF document text
- https://s3.amazonaws.com/turip/25377389252.pdfIn PDF document text
- https://s3.amazonaws.com/tamobalasu/54679936409.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/95983949868.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/lipodaronetej.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a8ae05d2-6abd-42c7-ad9e-bc63d8014823/92050438511.pdfIn PDF document text
- https://s3.amazonaws.com/kuboki/binewexubirufawuderelo.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/72457283287.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_off000057f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57F7	5228 bytes
SHA-256: `8997ceb0a53df4d86a333fb7b9184399c63f2155503744521d36e2c09f4bf5b0`
`font_01_sfnt_off000069c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69C1	10340 bytes
SHA-256: `dab9431aaa727cd8b3538394955a29b60a9c44e66644578da3d6f9d9a73c7b9a`

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