MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to suspicious or unknown domains, suggesting a link farm or redirection scheme. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, disguised as educational content. The ML classifier 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=definite+integral+examples+and+answers
- http://files.sunstudiohaidagwaii.com/uploads/1/3/0/8/130813516/ff00be52.pdf
- http://files.coachingandcounsellingottawa.com/uploads/1/3/1/6/131606874/tetexobowupumez_bugilexa_vunoget_subajupo.pdf
- http://valiv.patriciamacdonaldart.com/uploads/1/3/2/3/132303195/pisulafemexun.pdf
- http://files.mindgility.co/uploads/1/3/0/7/130739892/ae28b6676629.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0438/8644/4696/files/35829539192.pdf
- https://cdn.shopify.com/s/files/1/0432/1171/8820/files/kojivogufumojimanuselelok.pdf
- https://cdn.shopify.com/s/files/1/0433/2240/9125/files/zajujojikejez.pdf
- https://cdn.shopify.com/s/files/1/0438/2015/5042/files/tecnica_de_cateter_venoso_periferico.pdf
- https://cdn.shopify.com/s/files/1/0431/8992/8096/files/rome_total_war_wiki.pdf
- https://cdn.shopify.com/s/files/1/0431/7931/1268/files/xituniforifeji.pdf
- https://cdn.shopify.com/s/files/1/0437/8152/1560/files/62508073510.pdf
- https://cdn.shopify.com/s/files/1/0428/5782/4419/files/36374692723.pdf
- https://cdn.shopify.com/s/files/1/0432/6083/8050/files/shaw_business_ethics_8th_edition.pdf
- https://cdn.shopify.com/s/files/1/0434/9470/3270/files/mathematical_logic_for_gate.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_off00007f26.bin248c2a4d74f7b993ffa5a229b334adaee7a2e857a0380be3c56baece7eaa7f32 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F26 | 5520 bytes |
font_01_sfnt_off000091f1.bin945e524c769e94a6f59c61bb4c60ac20b23c1f6fb0ecfd69768b631d055843f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91F1 | 14828 bytes |
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