MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware delivery attempt. The document body, though heavily obfuscated, suggests a lure related to 'calculus early transcendentals 7th edition pdf answers'. Several suspicious URLs are embedded, including one that appears to be a link farm on disposable hosting and another with an invisible link to a domain associated with suspicious activity. The presence of external URIs and the overall structure point towards a phishing or malware download lure, likely delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.8464
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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Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LUREPDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
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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://jumiwimov.ru/award?keyword=calculus+early+transcendentals+7th+edition+pdf+answers PDF link annotation
- http://stavki-na-sport.site/kiwazogafoguzaximewegeau1l.pdfIn PDF document text
- http://securityofusersdevicesonline.site/car_rally_crash_stevenagenw3gh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485435/normal_6013a31d8f9b4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367940/normal_5fef398b4c36a.pdfIn PDF document text
- http://manamuposa.getenjoyment.net/everstart_maxx_3_amp_6v_12v_automotive_battery_charger_bc3e.pdfIn PDF document text
- http://usesucre.pro/luvogebewarowulanites46wna.pdfIn PDF document text
- http://normal-id.com/96161688525ndjj4.pdfIn PDF document text
- http://kavelokafozi.medianewsonline.com/dark_souls_3_save_game_editor.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460457/normal_5feb4695748d2.pdfIn PDF document text
- http://gevazuvunurodum.22web.org/lorusawanu.pdfIn PDF document text
- http://resimpub.com/762649604270hweo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469860/normal_5fdad37566a8f.pdfIn PDF document text
- http://kufafukedexepix.mygamesonline.org/rubafosadovatebagixi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4401540/normal_6002007b97cbf.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gixejemazob.myartsonline.com/implicaciones_de_las_inteligencias_multiples_en_la_educacion.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5d5621e6-6ca5-4646-b928-75c23aca1854/can_baby_sleep_overnight_in_uppababy_bassinet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/75e5c557-7bda-4aab-8a90-efe6378fa8d3/how_much_does_a_transmission_rebuild_kit_cost.pdfIn PDF document text
- http://jusowegakero.epizy.com/mechanicus_steam_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0328b7aa-90d0-4cce-9bab-4c839f221ecc/gramos_a_mililitros_reposteria.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/97cfd44b-731e-4f29-ae77-d3d8a096bd19/carl_rogers_quotes_on_power.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ef6304ae-e6e9-43db-8e74-6417b433ca14/fiwijoxuvisesasu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71f14c85-f239-43aa-8678-4f36145cf9d7/samsung_un55ju6400fxza_stand.pdfIn PDF document text
- http://vapefovofip.epizy.com/sodugesosiritosijusutas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/48148d38-a818-4d7a-ab28-bf5825dae0c7/project_management_101_training.pdfIn 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_off0000ecbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECBD | 3316 bytes |
SHA-256: 0fc6e56caed6bc7a7a8720c0d0c93c25811bdc911fadda22645714fc63c8c9f0 |
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font_01_sfnt_off0000f886.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF886 | 5420 bytes |
SHA-256: 5c5b867c981fc3d2a1570567d03ed04ee7dc61e3b6ccff3061e89a2951ba9c4e |
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font_02_sfnt_off00010b0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B0A | 11344 bytes |
SHA-256: dd54323cb1438d499d1be793dd81d1375cf8d70dff855b0d1fbaf3a4c6bd561a |
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