MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, contains references to 'elastic potential energy problems worksheet', indicating a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure and numerous external links point towards a phishing or malicious redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://nipisod.ru/wix?keyword=elastic+potential+energy+problems+worksheet PDF link annotation
- https://static.s123-cdn-static.com/uploads/4486190/normal_60018f25e44d0.pdfIn PDF document text
- https://libadelalisam.weebly.com/uploads/1/3/4/5/134579317/2dfdded5c1e.pdfIn PDF document text
- https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/wirikujopexel-podumu.pdfIn PDF document text
- https://cdn.sqhk.co/zapiseniw/UjglAjf/bakasub.pdfIn PDF document text
- https://cdn.sqhk.co/xanovika/Q0EfSha/galejinezafinufemijo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475863/normal_6024a3abe6b71.pdfIn PDF document text
- https://fiwinibikevuli.weebly.com/uploads/1/3/5/3/135339450/rodazomazifimo-zubirukub-xokebomipuva.pdfIn PDF document text
- https://biziremidawa.weebly.com/uploads/1/3/5/3/135397591/531744497ee15.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473053/normal_5fd26d1783b3f.pdfIn PDF document text
- https://cdn.sqhk.co/dixufeja/gg8Clha/37060549629.pdfIn PDF document text
- https://cdn.sqhk.co/xawodoze/i8jrCgf/91291791732.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/sojebelevenex/data_structures_and_algorithms_using_c_free_download.pdfIn PDF document text
- https://05491ccc-77c7-428b-9c25-74f2c6c50d4a.filesusr.com/ugd/d51d36_db621949b7114695ac29b34788e6adc1.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/7de52610-cc57-451d-8a28-9fea5397d3c8/five_nights_at_freddys_4_free_download_pc.pdfIn PDF document text
- https://s3.amazonaws.com/lakadutof/88959667477.pdfIn PDF document text
- https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_96fce63d48664b6d8b1a97d079352841.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/64cd40b8-24fb-40f3-af0b-927e5abba97b/69187876928.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/35b24ceb-cf8e-42c7-9f3b-c8045e68613b/ruxorimurumifuvokasewax.pdfIn PDF document text
- https://s3.amazonaws.com/rupatojuko/lexegiwinasa.pdfIn PDF document text
- https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_eb1758d6b83845df8da0049b69292ba6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0a3feee3-a48d-41bf-b772-b882ae94e22b/what_is_the_alpha_prefix_for_anthem_bcbs.pdfIn PDF document text
- https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_6984cc9f93804af0b7a433ee94f52abd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/foneniz/70520524673.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/466a4aec-4aaf-474b-88ce-d0fbd3974c2f/26551180018.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dd53.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD53 | 1964 bytes |
SHA-256: 06d927bb2b6daf891478ab4cab90709232d593f7c9b2cc46f53d704c02e6609f |
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font_01_sfnt_off0000e6a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6A1 | 5700 bytes |
SHA-256: aa51a3873e084b7dfde4670dfbd0317aa40a028962c0f12db5bd2f16611a1bb3 |
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font_02_sfnt_off0000f9f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9F6 | 9980 bytes |
SHA-256: e2fe53271a8548c2454da39751321f283bef384614fc8454876837e19407a970 |
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