MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One prominent link, 'https://ttraff.ru/pify?keyword=ielts+listening+book+9+test+4+answers', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The ML classifier also strongly indicated maliciousness.
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=ielts+listening+book+9+test+4+answers
- http://files.garnersoftware.com/uploads/1/3/0/7/130739284/4478271.pdf
- http://vesuj.carnivalglassworldwide.com/uploads/1/3/1/6/131637395/ferorizetuwufu.pdf
- http://files.nicholasliwag.com/uploads/1/3/1/3/131381612/47399.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0435/5194/8963/files/7842787169.pdf
- https://cdn.shopify.com/s/files/1/0436/2915/0368/files/bikolerasifesonurafubum.pdf
- https://cdn.shopify.com/s/files/1/0432/0513/2456/files/85121864479.pdf
- https://cdn.shopify.com/s/files/1/0433/7034/8694/files/bob_woodward_fear_download.pdf
- https://cdn.shopify.com/s/files/1/0432/9209/8716/files/running_average_python.pdf
- https://cdn.shopify.com/s/files/1/0438/9116/3291/files/5129159766.pdf
- https://cdn.shopify.com/s/files/1/0432/2256/5032/files/10095585395.pdf
- https://cdn.shopify.com/s/files/1/0433/0625/4504/files/21118895354.pdf
- https://cdn.shopify.com/s/files/1/0434/7301/0845/files/buvulagirasexaxikovesadaz.pdf
- https://cdn.shopify.com/s/files/1/0437/1657/5383/files/pifusanetikowidik.pdf
- https://cdn.shopify.com/s/files/1/0433/0163/4213/files/filo_actinopoda.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_off000092f0.binaede17e754bbba8d3f8f07f475eab084297132e3646f4c93c2b84f84d2d47fb0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x92F0 | 5332 bytes |
font_01_sfnt_off0000a52e.binb48342fffa9d5d70a926b2d7f97401f21412352f15e7744851ae773e1d4b9d96 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA52E | 10376 bytes |
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