MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is a PDF that has been flagged by multiple heuristics as malicious, including a critical finding for a large number of external PDF links, suggesting a link farm or redirection scheme. The ML classifier and ClamAV also strongly indicate maliciousness. While no scripts were extracted, the presence of numerous external URLs, one of which is `https://gimoguvi.ru/strik?utm_term=essential+chemistry+for+cambridge+igcse+student+book`, points towards a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 5
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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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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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External URI info PDF_URIPDF contains an external URL action
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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://gimoguvi.ru/strik?utm_term=essential+chemistry+for+cambridge+igcse+student+book
- https://static.s123-cdn-static.com/uploads/4375340/normal_6003b77ba5e3a.pdf
- http://yandex-delivery.cc/sda_childrens_story_videobobak.pdf
- https://jevoweli.weebly.com/uploads/1/3/5/9/135958856/lawakotefewidiguw.pdf
- http://foyou.store/autodesk_app_full_version1j0vl.pdf
- https://jumozapanase.weebly.com/uploads/1/3/6/0/136001057/5581008.pdf
- https://cdn-cms.f-static.net/uploads/4422918/normal_600a118e8f582.pdf
- https://cdn-cms.f-static.net/uploads/4448345/normal_602437ffde8fe.pdf
- https://cdn-cms.f-static.net/uploads/4480581/normal_601865a830836.pdf
- https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/fiwudagove-vazuvexujis-worabudulaf-pexenodimewuled.pdf
- https://tosixugiza.weebly.com/uploads/1/3/6/0/136052785/9890105.pdf
- http://trikotoria.ru/application_letter_sample_format_for_seamana5jei.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/juvetaso/sikonowa.pdf
- https://s3.amazonaws.com/wibadinavosunom/towuz.pdf
- https://uploads.strikinglycdn.com/files/b1306547-3952-4a29-95d9-b392cd492c88/how_to_draw_what_you_see_in_your_mind.pdf
- https://uploads.strikinglycdn.com/files/0f10b790-ca8f-46cc-85e5-e06d785b93db/bobisukotajozefigoka.pdf
- https://uploads.strikinglycdn.com/files/a033f95f-b0b3-4625-8618-e4ccee8efe45/what_are_some_characteristics_of_data_warehousing.pdf
- https://uploads.strikinglycdn.com/files/863718a5-1d31-4b22-bddf-62e240e028a3/jazapeze.pdf
- https://s3.amazonaws.com/xozeb/4459134785.pdf
- https://uploads.strikinglycdn.com/files/cdfab914-1250-4452-81d2-cf5a42ac649d/wabumop.pdf
- https://uploads.strikinglycdn.com/files/134d4f69-abea-4afe-9e16-26a8098595cf/78008521680.pdf
- https://s3.amazonaws.com/ditiruz/dakuzotogokumanad.pdf
- https://uploads.strikinglycdn.com/files/7d7b74a1-f421-4466-bcac-2c60afaa3381/sadaguxirikokumufe.pdf
- https://uploads.strikinglycdn.com/files/d26b7d10-c15d-4b0f-805d-229d4517c384/68008156527.pdf
- https://uploads.strikinglycdn.com/files/a8d8c624-9c29-4b70-b7d5-43de68b0c031/12911407821.pdf
- https://s3.amazonaws.com/zibenoroduzuw/7137337806.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_off0000dd60.bin489f64a7b215717e90cea61b2225cc5c7d8b6640dccd4b8da5a54967e3620cc2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD60 | 5696 bytes |
font_01_sfnt_off0000f0a1.bin4a447503ddc88fd67d1cb0613d003b2d952b0479c4200a3ad48df77173669711 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0A1 | 10488 bytes |
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