PDF malware analysis — malicious · 4daa5bf04176034c

MALICIOUS

PDF

37.9 KB Created: 2020-10-31 15:09:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 9760ee57a48e679456733255a6c85b7e SHA-1: 972c3fd7311fcf71a48cff8b322527805c8fe6ce SHA-256: 4daa5bf04176034c16c88f62243e52a50d75fdba989392adbcae11b65de81556

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body, though obfuscated, contains the URL and appears to be a lure related to a 'transfer deed'. The presence of embedded URLs and the critical heuristic firing strongly suggest this document is designed to lead users to malicious sites.

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.cc/123?keyword=intra+family+transfer+deed In PDF document text
- https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/5c13b6809.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381287/normal_5f99057ce903b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409244/normal_5f97d00344b98.pdfIn PDF document text
- https://defelewag.weebly.com/uploads/1/3/2/7/132741475/7879423.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374540/normal_5f9215de9d9a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378393/normal_5f8e01eb970f4.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/xilasisefi/caatsa_sanctions.pdfIn PDF document text
- https://s3.amazonaws.com/ruzaganog/nationalism_vs_globalism.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/54017020101.pdfIn PDF document text
- https://s3.amazonaws.com/dozuga/58335569818.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/3324/5880/files/45762596517.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_off00005755.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5755	5092 bytes
SHA-256: `011a672f25eb815da2709eafdaa95560980abbeba34145f367ef1462e75a2cd5`
`font_01_sfnt_off0000689c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x689C	10324 bytes
SHA-256: `ae41a40432ef1726dc919c2bb7dce3159750841ccca66cd76fd411f453dcaecc`

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