MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass of external links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=manual+biblico+nelson', which is also listed as a malicious redirector. This suggests the primary goal is to redirect the user to malicious content. 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=manual+biblico+nelson
- http://files.polowl.com/uploads/1/3/1/8/131857626/5346932.pdf
- http://files.flexypakofli.com/uploads/1/3/0/7/130740211/c5b5c8c5ffde719.pdf
- https://cdn.shopify.com/s/files/1/0452/3904/2205/files/pixalid.pdf
- https://cdn.shopify.com/s/files/1/0440/3301/5958/files/89064565413.pdf
- https://cdn.shopify.com/s/files/1/0433/3443/4969/files/diwetojado.pdf
- https://cdn.shopify.com/s/files/1/0431/9143/5422/files/barron_s_toeic_practice_exams_3rd_edition.pdf
- https://cdn.shopify.com/s/files/1/0428/4809/2323/files/accord_participe_pass_avoir_et_tre.pdf
- https://cdn.shopify.com/s/files/1/0430/5446/5175/files/divina_commedia_gratis.pdf
- https://cdn.shopify.com/s/files/1/0438/9657/0024/files/76929126668.pdf
- https://cdn.shopify.com/s/files/1/0431/3330/4986/files/sosodutetova.pdf
- https://cdn.shopify.com/s/files/1/0430/6924/3549/files/miwabenudevafefip.pdf
- https://cdn.shopify.com/s/files/1/0437/1188/9573/files/pifezibowupafodibusezo.pdf
- https://cdn.shopify.com/s/files/1/0428/1712/6556/files/bafefefeti.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_off000074c9.bin826ffe2cf031b81fd3f58648f3814cf8df2331776395a788a92009c1416a6cdf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74C9 | 4840 bytes |
font_01_sfnt_off0000854e.bin04a01ab3831c3f94f6b49d9944bb31ae715631ec00e13532c363791677dc32d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x854E | 10580 bytes |
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