MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://ttraff.ru/pify?keyword=deped+affidavit+of+undertaking+annex+3+pdf'. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to 'Deped affidavit of undertaking'. The presence of numerous external PDF links, many pointing to Shopify, indicates a potential link farm or content stuffing technique to obscure the malicious intent. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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=deped+affidavit+of+undertaking+annex+3+pdf
- http://files.ccsfmarketing.com/uploads/1/3/1/4/131482953/zitapinerotitu.pdf
- http://files.emi-ceramics.com/uploads/1/3/2/6/132681066/8337133.pdf
- http://files.drheatherloenser.com/uploads/1/3/1/8/131858916/4677354.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/0127/3768/files/valorexawekolediragababuk.pdf
- https://cdn.shopify.com/s/files/1/0439/8232/3870/files/wordly_wise_book_9_lesson_1.pdf
- https://cdn.shopify.com/s/files/1/0430/9660/4825/files/kejigokota.pdf
- https://cdn.shopify.com/s/files/1/0435/0250/2048/files/43144440399.pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1562/files/lopafibalorizi.pdf
- https://cdn.shopify.com/s/files/1/0432/6742/4412/files/38232444788.pdf
- https://cdn.shopify.com/s/files/1/0431/5345/7320/files/mabewuribadatapara.pdf
- https://cdn.shopify.com/s/files/1/0437/6192/6293/files/17834526959.pdf
- https://cdn.shopify.com/s/files/1/0431/4578/9600/files/juzobuvaxuzurenuxoje.pdf
- https://cdn.shopify.com/s/files/1/0428/2191/0687/files/43491688345.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_off00008d4a.bin03841c36a03acc4af001f997de10cb2b52a090ee80b047c8ee2a71a4593867d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D4A | 5356 bytes |
font_01_sfnt_off00009faa.bin6f2dd4b775c4ed89810d2bc0dc5e9d8180fe0c323eeb6319299274d3ab198a16 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9FAA | 10208 bytes |
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