MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, identified as a PDF link farm, pointing to various external resources. One of these links, 'https://ttraff.ru/pify?keyword=endocrine+system+in+insects+pdf', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the PDF is used to drive traffic to potentially malicious or spam-related websites.
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=endocrine+system+in+insects+pdf
- http://files.biblebasics.net/uploads/1/3/1/0/131069879/8184137.pdf
- http://files.heroandprincessparties.com/uploads/1/3/0/7/130775245/024e6861da.pdf
- http://zazip.palouserivercounseling.org/uploads/1/3/1/3/131384635/2155726.pdf
- http://ritufa.rowanandco.shop/uploads/1/3/1/6/131606263/7c62a.pdf
- http://files.inwrought.com/uploads/1/3/1/4/131453198/zelefilagiku_petafal_kazexifojufoz_majumo.pdf
- https://cdn.shopify.com/s/files/1/0432/8564/3419/files/semujesutuzunarolupemawa.pdf
- https://cdn.shopify.com/s/files/1/0431/4782/1212/files/ruguz.pdf
- https://cdn.shopify.com/s/files/1/0454/7198/9918/files/cardiogenic_pulmonary_edema.pdf
- https://cdn.shopify.com/s/files/1/0432/3622/9278/files/70429436426.pdf
- https://cdn.shopify.com/s/files/1/0427/9359/9132/files/21317427868.pdf
- https://cdn.shopify.com/s/files/1/0440/0958/6853/files/wikutede.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
- https://cdn.shopify.com/s/files/1/0441/2728/9496/files/63670980213.pdf
- https://cdn.shopify.com/s/files/1/0433/7546/0517/files/32945912091.pdf
- https://cdn.shopify.com/s/files/1/0434/9971/6770/files/karugapiwasaposifun.pdf
- https://cdn.shopify.com/s/files/1/0439/2553/6936/files/retinopatia_diabetica_unam.pdf
- https://cdn.shopify.com/s/files/1/0441/1057/7816/files/tiparivulatofokorino.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a1a7.bin2c6111386cdf07ae6e8c71f21818cf1647a4ee6d6ab7cf9ebe0f78202e7d9169 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA1A7 | 5120 bytes |
font_01_sfnt_off0000b309.bin5c92dff2c0ad5cff1c43c87a8009144b8046d75152a040839e744ebc3d486afb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB309 | 10280 bytes |
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